They are basically US republicans, with a heavy protestant sectarian tinge. They have links to Ulster nationalist paramilitary groups like the UVF and UDA, which is ironic given the Corbyn IRA message they gave.
They are extremely socially conservative. Are you gay? Do you need an abortion? Do you care about the environment? Tough luck, buddy.
Speaking of, they are hopelessly corrupt. A corruption scandal regarding government subsidy for electric heaters brought down the government and they had to have new elecions, where DUP got hit hard.
For more info, see @Castiel
@Cristo do you really see this government lasting a full term? It is the opposite of strong and stable.
What with EVEL, the DUP or the Scottish Tory MPs can't do much to vote on England only laws either. And that's only if the Tories manage to strike a deal. This is amazing. When the Tories inevitably fuck up Brexit, if Labour don't be twats now, they can get an even better result. Especially as the whole terrorist sympathiser shite goes down the shitter.
This is a very volatile situation.