http://www.surveyusa.com/50State2005/100USSenatorApprovalRatings051213byNetApproval.htmBrought to you by the same company that finds Bush with a positive net approval rating in only 8 states. This is a few weeks old but I don't believe it has been posted yet.
Only 2 senators have a negative net approval rating, Burns (R) from Montana and Lautenberg (D) from NJ. People seem to be much more positive about their senators than their govenors or their presidents. I am guessing it is because many people don't even pay much attention to what their senators are doing.
The top 10 (lots of ties)
Rank, State, Name, Party, Approve, Disapprove, Net approval
1 ME Snowe, Olympia R 75% 22% 53%
1 ME Collins, Susan R 74% 21% 53%
3 SD Johnson, Tim D 71% 23% 48%
4 HI Inouye, Daniel D 69% 22% 47%
5 IL Obama, Barack D 69% 23% 46%
6 ND Conrad, Kent D 70% 26% 44%
7 ND Dorgan, Byron D 69% 26% 43%
8 NE Nelson, Ben D 66% 24% 42%
9 RI Reed, Jack D 66% 25% 41%
10 AK Stevens, Ted R 67% 28% 39%
10 AZ McCain, John R 67% 28% 39%
10 MS Lott, Trent R 66% 27% 39%
10 VT Leahy, Patrick D 66% 27% 39%
Other notables
Rank, State, Name, Party, Approve, Disapprove, Net approval
20 DE Biden, Joseph D 65% 30% 35%
20 WV Byrd, Robert D 65% 30% 35%
23 IN Bayh, Evan D 63% 29% 34%
29 CT Lieberman, Joseph D 63% 31% 32%
37 NY Clinton, Hillary D 63% 33% 30%
42 NE Hagel, Chuck R 59% 31% 28%
48 MA Kennedy, Edward D 60% 35% 25%
50 KS Brownback, Sam R 58% 34% 24%
60 FL Nelson, Bill D 48% 28% 20%
63 CO Salazar, Ken D 55% 36% 19%
63 MA Kerry, John D 57% 38% 19%
70 RI Chafee, Lincoln R 54% 38% 16%
70 WI Feingold, Russell D 54% 38% 16%
75 CA Feinstein, Dianne D 52% 37% 15%
82 NV Reid, Harry D 52% 41% 11%
84 CA Boxer, Barbara D 50% 40% 10%
88 LA Landrieu, Mary D 52% 43% 9%
90 IL Durbin, Richard D 46% 39% 7%
90 TN Frist, Bill R 49% 42% 7%
95 PA Santorum, Rick R 47% 43% 4%