To me, voting to prevent something bad, even if it's voting for something that you don't always agree with. There is always a protest vote, but if people get hold of that and attract a large protest vote you end up with a Farage or a Le Pen with some real power. Corruption is a real worry, and a lot of politicians seem to be neck deep into it. I'd like to think there is always standing on a anti-corruption ticket. The alternative is to get involved with your peers and start something yourselves. That's the whole point of the political process. I maintain apathy is a bigger threat to democracy than the corrupt behaviour of some of the politicians. There should be an effective method of removing those types.