I'll keep this brief.
I just want to win.
I get that not all Democrats represent all my interests all the time.
I get they pander too much to the right for my liking.
I get that they are often pandering to the same big money interests that I dislike.
I also know a Republican controlled Senate will make things even more impossible to deal with. No more judicial nominations. A constant stream of rubber stamped conservative bills. No more counter to the House of Representatives. No more voice for minorities, LGBT, women's rights, the poor. Nothing. Our legislative branch will be entirely a voice for the 'traditional' voter: white males.
(I'm not talking bad about you white males btw; my skin doesn't exactly scream of a person with a fantastic tan.)
More, and better, Democrats. Right now I just need more of them. Enough to hold the Senate. In two years I'll focus on better Democrats, when I'm not worried about whether or not the Senate will survive without falling into the hands of Republicans.
So hell yes I'm going to vote. Because I don't want my legislative branch trying to pass bills that restrict the freedoms of anyone that isn't a well off white male.