Paul Ryan Endorses Romney

3.   House Budget Committee Chairman Paul Ryan, R-Wis., said conservatives need to "coalesce" around the GOP front-runner and not let the primary contest drag on. A new poll showed Mitt Romney leading Rick Santorum in Wis. Romney has proposed a Medicare reform that's similar to the bipartisan Ryan-Wyden plan. Ryan and Fla. Sen. Marco Rubio are seen as possible base-uniting, swing-state VP nominees.