The Democratic slaughter Tuesday will make it harder for President Obama to govern -- but might make it easier for him to win re-election in 2012. The Obama White House will shift into re-election mode in a few months, and the 2012 presidential campaign headquarters will be Chicago again, if all goes as planned. But for now, a lot of attention on the political front will have to be on dealing with a GOP-controlled House and a Senate where Republican gains will make it harder to get the 60 votes needed to get anything done.