NYTimes has an article on how social issues and the deficit play with Republican voters. The point is the Tea Party was very concerned about spending; now voters are less concerned. (I'd quibble a bit with Cohn's analysis: I think a lot of the Tea Party emotion was over the idea of socialism, specifically pushed by a black president, not so much a concern for fiscal conservatism.)
Anyhow, I find myself not in the mainstream of Democrats--I'm much more concerned about deficits and the rising cost of interest on the debt than the average elephant, and much more in favor of raising taxes as a way of handling it than most anyone. I wholeheartedly support boosting the IRS budget to collect taxes, but I'd also raise taxes on those above $100K.