If the GOP wins the House, how long before they start Impeachment against Obama?

Sure. But I’m actually impressed that the GOP did as good a job as they did at harnessing/co-opting the Tea Party. See, in support: Gauging the scope of the tea party movement in America, which rings true to me.

Furthermore, the GOP as a monolithic whole made large electoral gains that just 2 years ago were…let’s say…unlikely. I see their not taking a few Senate seats as the price paid for the rest of those unlikely gains.