Political insiders in Washington and New Hampshire say Sen. Judd Gregg’s nomination as Barack Obama’s commerce secretary is nearly a “done deal” – with Republicans signing off as long as Gregg’s Senate seat goes to another Republican, and Democrats in agreement as long as that Republican is either a caretaker or somebody they can beat in 2010. … Democrats say there are plenty of candidates for the caretaker role, including Peter Spaulding, who sits on New Hampshire’s Executive Council; Bonnie Newman, a moderate Republican who was chief of staff to Gregg when he served in the House and an interim president at the University of New Hampshire; former state House speaker Doug Scamman; the 86-year-old former governor, Walter Peterson; and state legislator Liz Hager, a Republican who supported Obama in November and has told local reporters she’d serve for only two years.