Bob Benenson’s Jigsaw Politics: GOP Incumbent Exodus Reflects — and Abets — Dems’ Extending Majorities By Bob Benenson and CQ Politics Editor Posted February 1, 2008 at 1:00am Facebook Twitter Email Reddit 35 Senate races 435 House races. national poll numbers must defend 23 of their seats “No Clear Favorite” tossups. 11th District Recent Stories Capitol Lens | O’s face Mayorkas impeachment headed to Senate for April 11 trial Muslim American appeals court nominee loses Democratic support At the Races: Lieberman lookback Court says South Carolina can use current congressional map Joseph Lieberman: A Capitol life in photos