Sen. John Ensign (R-Nev) to retire in 2012

Washington Post: “Ensign, who was first elected to the Senate in 2000 after two terms in the House, is the third Republican to announce his retirement in this year. He follows Sens. Kay Bailey Hutchison (Texas) and Jon Kyl (Ariz.) to the sidelines. Four Democrats, as well as Sen. Joe Lieberman (I-Conn.), who caucuses with Democrats, are also retiring in 2012.”