http://cayankee.blogs.com/cayankee/2006/01/alito_vote_watc_1.html
Based on that blog, I pulled out the ones that haven't committed and their status in '06. I was curious, but perhaps with no surprise, many are up for re-election and a few are retiring (and/or have a few other issues (that I'm aware of). (sorry the formatting isn't better).
Status in '06?
Akaka, Daniel- (D - HI) Up for Election
Bayh, Evan- (D - IN) Running for Pres in 08?
Bingaman, Jeff- (D - NM) Up for Election
Byrd, Robert- (D - WV) Up for Election (& mines)
Cantwell, Maria- (D - WA) Up for Election
Carper, Thomas- (D - DE) Up for Election
Chafee, Lincoln- (R - RI) Up for Election
Collins, Susan- (R - ME) RINO
Conrad, Kent- (D - ND) Up for Election
Dayton, Mark- (D - MN) Retiring
Dorgan, Byron- (D - ND)
Inouye, Daniel- (D - HI)
Jeffords, James- (I - VT) Retiring
Johnson, Tim- (D - SD)
Landrieu, Mary- (D - LA) Issues w & wants $ for Katrina
Lautenberg, Frank- (D - NJ)
Levin, Carl- (D - MI)
Lieberman, Joseph- (D - CT) Up for Election
Lincoln, Blanche- (D - AR)
Menendez, Robert- (D - NJ) Up for Election
Pryor, Mark- (D - AR)
Rockefeller, John- (D - WV) (mines)
Sarbanes, Paul- (D - MD) Retiring
Snowe, Olympia- (R - ME) Up for Election & RINO
Stevens, Ted- (R - AK) Wants his Bridge to Nowhere