"Sure, all things being equal, a president would rather have his allies firmly in control than not. But recent presidents have had more success when forced to work with slim majorities in Congress, or even none at all." – Matt Bai, 1/7/10.
"Under those conditions, the only way to achieve sustainable bipartisanship is to divide control of the government, forcing the parties to negotiate in order to get anything done. That pulls policy toward the center, which encourages reasonableness." – Jonathan Rauch, 3/25/10.