On Mark Levin's show yesterday he encourage disgruntled Democrats not to vote. Of course, he encouraged Republicans to vote.
I think you should not vote for a candidate because he is a Democrat or Republican. If you are not willing to examine the candidates and pick the best one for you, you should stay as far away from the voting booth as you can.
I could not tell you how many people I have met that vote for someone whose position on the issues are completely opposite of there own, just because they are voting for a specific party.
Don't allow yourself to fall into this category.