AP Photo

Tick . . . tick . . . tick . . .

That's the sound of a time bomb on Capitol Hill that may soon explode. As the final stretch of the 2010 congressional elections is about to start -- Labor Day weekend is the traditional kickoff for campaign season -- Democrats are increasingly upset at the Obama White House. For weeks, President Obama, whether on vacation or not, has been not been publicly focusing on the only issue congressional Democrats care about: jobs. This week, Obama devoted most of his time to Iraq and the Middle East process. "None of that is going to drive our base to the polls in two months or convince independents to vote D," a senior House Democratic aide complains.