first, some disclaimers
Obama was not my first choice in the Democratic primary. He wasn't even my second one. He was and is too centrist for me. Still, there was no Republican that I would have even considered voting for over any of the Democratic candidates and given the practicalities of our current system, I would not have considered a third party candidate.
I am terribly disappointed in the current congress. They wasted so many opportunities to do what really needed to be done and what they said they would do.
Even when I find the Republican party disgusting (which is much of the time), I admire the way they work together, if not to accomplish something, then to keep something they don't want from being accomplished.
The current administration has accomplished some significant things. True, we don't know what would have happened without the bailouts, but the non-partisan folk who study such things tell us again and again that things would be much much worse. We are sort of out of Iraq. There is a time table for Afghanistan. There are proposals to right the biggest economic divide in this country since the Great Depression (and it isn't a coincidence that the economy fell apart when the divide got that big again).
Historically, the times when there has been the most economic growth and income growth for all people have been under democratic administrations (check it out).
I will vote a straight Democratic ticket and, as much as is possible in any election, do that happily and proudly.
Now for the non-partisan part. This is a very important election. If the Democrats retain control of congress, we will see more of the change that Obama promised enacted. Maybe not all of it, but more of it. If any more Supreme Court Justices are chosen, there is a chance that Obama's choices would balance a very right wing leaning court. If you want that change, then you must vote for the Democratic candidates. If you do not vote, remember that the other side is highly energized and the far right will likely vote in droves so not voting is like voting for the following...
If you are against the change that Obama promises to continue and want to see the changes we have seen be repealed, vote for the Republican candidates. They are clearly calling for a return to the Bush era economic policies and more, including privatizing Social Security and cutting many of the safety net programs. Some/many of the Tea Party candidates are also calling for dismantling current government agencies like the Department of Education, the Environmental Protection Agency, even the Food and Drug Administration and others. A woman's right to choose could also be challenged. If a Supreme Court Justice position opened a Republican congress would ensure that the person be as centrist as possible. While there are some Tea Party candidates who are against the Republican establishment which they see as equally part of the problem, most who have won primaries have already turned color and become part of the Republican establishment (see Tea and Crackers in Rolling Stone for some examples).
The differences could not be more clear and there is no excuse for anyone, anywhere on the political spectrum not to vote and to do so intelligently. It is a critical election which will impact our lives for years to come.