Republican prospects of retaking the Senate received another blow yesterday when sources close to the Senator told NBC News that he would not seek re-election in 2008:Sen. Pete Domenici (R-NM) will not seek re-election in 2008, sources close to Domenici tell First Read and NBC News. Domenici will make the announcement tomorrow at 4 p.m. Mountain Time in New Mexico. Domenici's decision not to seek re-election, opens up yet another opportunity for Democrats -- this in a key Western "purple" state. Not counting Sen. Larry Craig (R-ID), Domenici would make the fourth retiring Republican senator this cycle. Wayne Allard (R-CO), Chuck Hagel (R-NE) and John Warner (R-VA) are the others. Each of these seats will be competitive for Democrats. A total of 34 Senate seats will be up for grabs next year with Republicans having to defend 22 of them. At least three of the retiring Senators - Warner, Craig, and Domenici - were seen as having little trouble getting re-elected. But Craig's...(Read Full Post)