There is, of course, a far older tradition of beautiful and inspiring political poster art; but there is no point here in raking over the history of the Soviet avant-garde, or of Aleksander Rodchenko's photomontages. This is a British election and these are British artists, who have rejected the Saatchi tendency towards killer publicity in favour of recapturing the intense emotions of us-and-them, of anger and loyalty, that Labour adverts inspired 25 years ago.
Back then, Labour was a tribe, and nothing captures the tribal feelings it must now fall back on better than David Shrigley's brilliant drawing of Gordon Brown: not so much a caricature as a delve into the primitive roots of political loyalty. As for the alternative, Jeremy Deller has portrayed a Conservative vote with the caustic accuracy that does what a campaigning poster should – it campaigns. But are there really no Tory artists? Tracey Emin, who has made positive noises about Cameron and shadow arts minister Ed Vaizey, has not yet launched a Tory manifesto policy, but you'd think she could at least do a slogan for them: "Labour isn't fucking working", perhaps. Nor is there a strong Liberal sentiment –unless Goshka Macuga is sending us a subliminal Clegg message.
These posters are the only things I have seen in the course of this entire election that capture the way I feel. Most of the artists are of my generation, in their 40s, and remember the reality of Tory rule. Shrigley speaks viscerally for the tribe: re-elect our leader Gordon Brown.
Martin ParrI took this photograph at the St Pauls carnival in Bristol last summer, which is like a mini-version of the Notting Hill carnival. In a picture as busy as this, there will often be somebody or something that doesn't quite work: I like the fact that all the people are there and it works. The crowd is predominantly African-Caribbean, with a few white English people watching with their cameras, as I was, so it's almost like a self-portrait without me in it.
I chose "Vote for Britain" rather than any particular party because that's the whole point. This is neutral and ambiguous and loaded. What does it mean to me? Well, I quite like Britain, of course, and one of the reasons I like taking photographs in Britain is that it challenges my own feelings about it: it's not all good and not all bad; there are things I like and things I don't. I'm soft left and I live in a marginal seat, Bristol West. I vote tactically, so I'll probably vote Lib Dem.
Mark WallingerWe have been through quite a few campaigns without memorable slogans now. Everyone harks back to the Saatchis' "Labour isn't working", but that was 1978. As a lifelong Labour person, through all the party's vicissitudes and disappointments, I was intrigued by the possibility of a campaign that revealed some of the bigger fault lines between the parties, beyond the not-very-galvanising debate over national insurance and VAT. I came up with two other slogans apart from this: "What school did you go to?" and "Who can afford to go private?"
I admit this isn't the most sophisticated, but it does go to the heart of the credibility of the man. Cameron reminds me of a bar of soap. He has been leader for a long time now and I have no idea what he stands for. I hope that the idea of the emperor's new clothes and all his empty rhetoric is implicit. The colours are those of the two main parties, and the union flag; I wanted it to be punchy.
I hope people look at this and see that there are real choices. I'm sick of people saying, "Oh, they're all the same." They're not, and it's up to us to see the differences. Labour is the party for equality and for reform in the Lords. Like most people I feel a little jaded after the banking crisis, but I will vote Labour and hope for the best.
They're a po-faced lot, though, aren't they? Let's hope someone in the campaign discovers a bit of wit: a good joke does hit home. Roy Hattersley was a wit, Robin Cook, Tony Benn – the people on the old left who can see the bigger picture. Though I did like Ken Clarke's description of the Hoon/Hewitt attempted leadership coup earlier this year: hiding behind the dagger and stabbing with the cloak. That was very good.
David ShrigleyWhen I'm drawing people, I tend to do it really quickly – sometimes it works, sometimes it doesn't. Nick Clegg is not easy to draw because you'd be hard pushed to think of anything physically defining about him. The only one I seem to be able to draw is David Cameron: I trace his face, then I make his features smaller in Photoshop and that seems to work. I drew Gordon Brown and it started to look like him the more I looked at it.
Historically I have voted Labour, but not since the Iraq war – I couldn't countenance that. I would never vote Conservative. This poster doesn't express my strong personal support, although of the three of them, I would like Brown to win. Originally the background was yellow, because I like black on yellow, but then I realised yellow was the Lib Dem colour. So I've gone for a rosy red, a kind of New New Labour red. The words say "re-elect", although he wasn't elected as leader, as such. I like the ambiguity.
Bob and Roberta SmithI don't want to tell people how to vote. The important thing is just to get involved in the whole jamboree – by voting, yes, but also by finding satirical messages to deface posters with, like the person who turned David Cameron into Elvis. If my own poster goes viral, so much the better. It's made up of four timber panels. On the upper panels are pictures of some of my Labour heroes: Clement Attlee, Tony Benn, Glenda Jackson, Bernie Grant – people with extraordinary vision. I put them there to remind me why I'm a Labour supporter. I stopped voting Labour after the Iraq war, and started voting Green. But I'm going to vote Labour in this election. I'm particularly impressed with Ed Miliband's stand on green issues: he could turn out to be in the same category as these heroes. Cameron just reminds me of a disappointed school master, lecturing his students about their stupid antics.
Gerald ScarfeThey're both crap, I suppose that's what I'm saying. If you go to the extreme and call them shits, that's probably not so nice. But I'm saying, really, voters have a crap choice. You would assume Cameron would be ahead, because he is new, and a change, and hasn't made all the mistakes Brown has, but he isn't and the election is very close. The caricature must come from the character of the person. I wasn't a supporter of Margaret Thatcher but she was good material, because she had such a strong personality. I could portray her as a knife or an axe; I couldn't do that with John Major or Iain Duncan Smith. I used to find drawing Brown quite dull because he's a dour personality – a big blob with ears. I draw Cameron in his Bullingdon outfit, because he's so desperate not to appear to be a toff. How daft does he think we are? My position as a cartoonist/journalist for all these years has been to try to remain neutral and to attack all sides, because they are all capable of fallibility. I know this is a bit of a cop out but here I'm saying, I don't know who to vote for. Like I say, it's a crap choice.
Richard WentworthThere are people who are obsessive about being born under a certain star sign, and those who believe you can only be born when you're born: that that was your time, that only those people could be your parents. I didn't want to leave people with the cheesiness of a bad joke about "labour", but I did want to remind people that they are born into a political space. I worked with some lovely designers who made this look as if it has been around for ever. The font is reminiscent of those Keep Calm and Carry On posters – it's of that period. The red wasn't a conscious decision in terms of "Labour red", just a happy accident; red goes in the eye quickly. I would love to see it reproduced very big. If people look at it and go "What does that mean?", that's good.
Jeremy DellerThis poster is anti-Conservative rather than pro-Labour. Rupert Murdoch is the most powerful lobbyist there is in this country, so I'm drawing attention to the fact that a vote for the Tories is a vote for him. If I'd made a poster for the last election, it would have looked almost the same, except it would have said "Vote Labour" next to a picture of George Bush – Bush was so close to Blair. This time around, it's Murdoch who counts for the Tories, even more than David Cameron or any other Tory politician. It's a small poster, so it could be used as a bumper sticker on a car. But I'd love to see it blown up on a massive billboard. The posters and adverts Labour are using for this election are terrible; it's as if they haven't put any thought into them at all, just sent them to the newspapers to grab that day's headlines.
Yinka ShonibareThis slogan doesn't refer to politicians: I want people to vote for me. My party is the Me party. It's not registered yet, though. I'm just celebrating the fact that, in this democratic system, anyone can stand. I like me, you see, so I assume everyone else will. People think politicians like to be the centre of attention, but artists are worse. So I'm poking fun at artists, too. They are not rosettes – they are flowers made from African textiles, in the colours of the three main parties. Flowers are attractive, whereas political posters are rarely well done. And even when they are, they're still knocking or negative. I think politicians are only interested in power and lining their own pockets. But I have always voted; who for is my own business. When I was a child in Nigeria, a military regime was in charge. There were soldiers everywhere and there was no question of voting. It started to feel normal. That's why I value the vote.
Goshka MacugaI made this with the designer Fraser Muggeridge. It's double-sided: the "Left Right Forward" panel is the front, and the blue side is the reverse, printed on the kind of thin, textured underlay that is used underneath billboard posters to make them look opaque. I wanted to think about a political poster as a physical object, rather than just an image.
The front reflects the confused picture we have of UK politics right now. I have mixed feelings about Labour, especially regarding the war in Iraq, and the fact that what people really felt about it wasn't taken into consideration. But I'm also concerned about what a Conservative government would mean for arts funding. It seems like the two parties have merged into one: whether you vote for the left or the right adds up to much the same thing.
But without voting, you have no control. So the quote on the back of the poster is to remind us about the roots of democracy. It's from a speech Pericles made to the Athenians during the Peloponnesian wars. He's speaking about the impossibility of doing justice to the brave men who have lost their lives in the war – something that resonates with the war in Iraq. But he's also reminding us of the respect given in Athens to those involved in politics, something that today we have all but lost.
Maggi HamblingEvery morning I paint the sea, and I am always reminded of how remarkably small I am. It is a very humbling experience, and I think a bit of humility wouldn't go amiss with our politicians. So I've chosen the sea to remind politicans about the bigger picture: nature, and the way it is taking its revenge – through climate change, through volcanic eruptions, through coastal erosion. They could all do with thinking more about that, and less about political bitching and wrangling. All artists are anarchists at heart – at least, they are if they're any good. So I've chosen red – the colour of anarchy, along with black – for the quotation, which curves and curls across the sea picture like a wave. It's from Julius Caesar, one of Shakespeare's most political plays, and seems particularly appropriate at this moment. It reminds us that everything is about timing: the Falklands war was crucial to Mrs Thatcher's success, and now the changes in nature and climate are defining the issues for this election.
I vote in London, where my MP is Labour's wonderful Kate Hoey. She is pro-hunting, as am I, so she'll be getting my vote.
Maggi Hambling: New Sea Sculpture, Paintings and Etchings is at Marlborough Fine Art, London W1, from 5 May to 5 June.
Liam GillickAs with all my art, I went back to the source: in this case, the Labour party's own website. "The democratic socialist party" is the phrase it still uses to describe itself, though you'd be hard pushed to recognise that in the way the party talks about itself today.
I find it perverse that Labour is shying away from its own legacy. There are lots of aspects of its current policies – the new tax rate, the investment in public spending – that fit with these core values. I hope my poster reminds politicians and voters alike of that.
With its strong Helvetica font, the poster is nostalgic: it reminds me of growing up in the 1970s, when Labour was in crisis, and you could recognise every Labour family in the street from their bold posters: they really stood out. Campaign posters have become nasty and cynical, taking their cue from the Saatchis' for the Tories, which were more about people than policies. Ironic, postmodern posters are not what we need: the most important thing is to remind voters what the party stands for, and to encourage them to vote.
Alison JacksonI've been shooting a whole series of photographs, and working on some web video clips, during this election. Nick Clegg wasn't hard to cast: he's quite a normal-looking guy and there are quite a few people who can look like him. But a good Gordon Brown has been impossible to find: I held casting sessions all over England and Scotland, scouring areas where there might be someone who looked like him. He's a big man, so I focused on places where people eat a lot, in Scotland particularly, but no one wanted to put themselves forward. I put five casting directors on it, and they were practically in tears: they had never experienced anything like it. I've found one, and he's reasonably good in profile, but there's only one side that works. Cameron I'm still working on: in his case, there are lots who will put themselves forward, but I'm still looking for the perfect one.
During the first TV debate it was striking how much Brown was trying to align himself with Clegg. I wondered what might be happening behind the scenes, and came up with these scenarios: Clegg and Brown celebrating, Brown letting Clegg try out the prime minister's chair. And I'm very interested in Mandelson and his role: what a comeback, having parted ways with Brown – now he's here to help. You just never know what people are planning.