Aside from right-wing election fraud involving electronic voting, voter suppression, un-counted provisional ballots and any other crooked scheme they can come up with, does voting always matter? Say you live in a solidly Red state or a solid Blue state, do you take the time?
The simple answer is yes, and not just because it's your patriotic duty. The popular vote could be close since the cascade of Romney lies does seem to have fired up the knuckle draggers to vote for a 'non-Christian' (okay, Franklin Graham took him off the cult list). The more votes that Obama gets the better it looks, the better it is for your nation.
Green Party and the like, get over yourselves, this one matters. Don't give me that: 'the lessor of two evils is still evil'; or 'they're all corrupt'. Those are right-wing 'suppress the vote' talking points, just because fuzzy thinking liberals repeat them, doesn't change that.
Any third party 'liberal' movement is seriously living in a bubble if they think they will ever catch on. If you really want to accomplish something, form a faction inside the Democratic Party, and push your reforms where they will count for something. Vote like it matters, or it could be that you will have missed the last time you will ever get to cast a ballot.