I'm a social democrat, so one of those people who thinks government intervention is generally good and that it is through democratic process and individual involvement in democracy that the best outcomes are achieved, these outcomes generally being those leaning towards a larger welfare state with proportional taxation.
Which means I'd vote Democracts/Green in the US, Labor/Green in Australia, and anything liberal/socialist elsewhere (in Australia, we stupidly have a conservative party called 'The Liberal Party' which is annoying beyond all hell to explain why).
In Australia we have a bicameral system with the lower house (the more important one in Aus.) being elected based on 'seats' (constituencies) that are roughly based on population. So Sydney, for instance, has a huge number of seats due to it's dense population, whereas 6 seats cover geographically 80% of the country (we have 150 seats). However the city seats are fairly stable in their voting, so massive expenditure goes to rural areas and specific regional areas to win swing seats and thus gain parliament. The upper house is based on proportional voting (% based).
This leads to some very messy governments. If neither part has more than 75 seats in the lower house they cannot form government and have to win over independents and the Greens (the only minor party that wins federal seats) to form government. And then they have to control the upper house as well to pass bills through both houses.
Currently the Labor (centre-left) government in power has fewer seats than the Coalition (Liberal Party + National Party, centre-right) but through negotiations with independents and the Greens (generally left) they have a total of ~76 seats, whereas the Coalition has the other independents and Katter's Crazies Party to form the opposition. The Greens/Labor informal coalition also control the senate.
Basically what this means is that the government we almost elected into power based on the constituencies, the Coalition (Labor held onto a few seats by a very narrow margin, and it took a full week before we knew the results) held only 44% of the popular vote.
F#$ked up duopolic systems are present everywhere in the world unfortunately :/
EDIT: And here's an image of the houses, courtesy of the ABC

Original Link:
http://www.abc.net.au/news/2013-01-30/c ... rt/4491594Image © Australian Broadcasting Corporation, 2011