I tend to vote mostly democrat, have voted for a libertarian or two in the past though. Almost voted for a republican in a local election but ended up liking the democrat just slightly more.
Right now it ends up almost always (outside of municipal elections, depending on the candidate) being democrat because republicans keep holding onto their "pro-life, anti-gay marriage, no new taxes/cut taxes," stuff. If there was a candidate I didn't hate on social issues, and was willing to look at increasing taxes if need be, then I'd be tempted to vote for a republican. A little cautious on supporting state government over federal, due to the constant attempts to ban gay marriage and the such, but could overlook it if the rest clicked.
Seems be a long long time before that, so I guess I'll end up being a mostly straight ticket voter unless the democrats put up some real dross then I'll go libertarian or green.