Another Senate Democrat Won't Run

From The Wall Street Journal:

Sen. Jeff Bingaman, a New Mexico Democrat, announced Friday that he will not run for re-election next year, putting another seat in play as his party seeks to hold onto its Senate majority.

With his decision not to seek a sixth six-year term, the 67-year-old becomes the fourth senator aligned with Democrats not to run for re-election, joining Sens. Kent Conrad of North Dakota, Jim Webb of Virginia and Joe Lieberman, the Connecticut independent who caucuses with Democrats. Democrats currently wield a six-seat Senate majority, including Mr. Lieberman and Vermont independent Bernie Sanders.