According to The Politico President Obama will nominate Judd Gregg to be his Sectary of Commerce tomorrow. Gregg will almost assuredly be confirmed easily and quickly as he’s well liked by Republicans and Democrats alike.
This now opens up his Senate seat. New Hampshire’s Democratic Governor John Lynch has all but pledged to appoint a Republican to the seat and Gregg said he only would have accepted with that condition. The most commonly mentioned liberal Republican placeholder is Bonnie Newman who served as chief of staff to Gregg but also endorsed Lynch in 2004.
This almost certainly assures that Gregg will at least vote for cloture on the stimulus which makes it likely that it will pass. In addition Newman is likely to be close politically to moderate Republicans like Snowe during her two years.
Also, after two years she is likely to retire rather then run for re-election. This will make the Democratic candidate (likely progressive Rep. Paul Hodes or Rep. Carol Shea-Porter) the odds on favorite. Likely Republican candidates include former Senator John Sununu and other even weaker candidates.
So in short, this moves the Senate slightly leftward for the next two years and will add a very progressive Senator after that. In return Gregg will get to be a member of the cabinet where he can’t do a whole lot of damage and will be useful selling stuff to Senate Republicans.