It's election day and regardless of who you support, vote! It's your right, people died for that right. People fought for that right. This is a democracy and it is your duty as a citizen to keep it as such. That means you vote, even if you're not 100% behind the candidate you're supporting.
This very well may be the most important election in your history, are you going to tell your kids and grandkids you sat this one out? I don't think so.