The Good folks at Survey USA did Senatorial approval rating polls for all 100 senators!
100 senate ratingsAs a very, very rough rule of thumb, any Senator under +/- 50% should be considered vulnerable - does not mean they will lose, but a solid candidate has a decent shot of beating them.
Any Senator under 55% is a "might be vulnerable" - you really have to look at the state to get a better idea.
Again, this is one poll (actually two, they did two polls one month apart) so differences of a few points are not all that meaningfull on way or another, but still it is quite an interesting set of data!
I find it interesting the all 100% have a higher approval than disapproval number.
Here, ranked by net rating (Approval - disapproval) are all 100 SEnators..
1 IL Obama, Barack 72% 21% 51%
2 HI Inouye, Daniel 70% 19% 51%
3 ND Conrad, Kent 71% 22% 49%
4 VT Leahy, Patrick 71% 22% 49%
5 ME Collins, Susan 71% 23% 48%
6 WV Rockefeller, Jay 70% 22% 48%
7 ME Snowe, Olympia 71% 24% 47%
8 ND Dorgan, Byron 70% 24% 46%
9 RI Reed, Jack 69% 23% 46%
10 IN Bayh, Evan 67% 22% 45%
11 SD Johnson, Tim 67% 25% 42%
12 AK Stevens, Ted 66% 24% 42%
13 AZ McCain, John 67% 26% 41%
14 DE Carper, Thomas 63% 23% 40%
15 VT Jeffords, James 66% 27% 39%
16 DE Biden, Joseph 65% 27% 38%
17 TX Hutchison, Kay 64% 26% 38%
18 NE Nelson, Ben 64% 26% 38%
19 HI Akaka, Daniel 62% 24% 38%
20 OR Wyden, Ron 62% 24% 38%
21 CT Lieberman, Joseph 65% 28% 37%
22 MS Cochran, Thad 63% 26% 37%
23 MS Lott, Trent 65% 29% 36%
24 NY Clinton, Hillary 65% 30% 35%
25 IN Lugar, Richard 61% 26% 35%
26 IA Grassley, Chuck 61% 27% 34%
27 NY Schumer, Charles 61% 28% 33%
28 ID Crapo, Michael 59% 26% 33%
29 NM Bingaman, Jeff 60% 28% 32%
30 UT Bennett, Robert 59% 27% 32%
31 WV Byrd, Robert 63% 32% 31%
32 ID Craig, Larry 58% 28% 30%
33 WI Feingold, Russell 62% 33% 29%
34 NM Domenici, Pete 61% 32% 29%
35 UT Hatch, Orrin 61% 32% 29%
36 MD Mikulski, Barbara 60% 31% 29%
37 WY Thomas, Craig 59% 30% 29%
38 WI Kohl, Herb 59% 31% 28%
39 CT Dodd, Christopher 58% 30% 28%
40 AL Shelby, Richard 58% 30% 28%
41 MA Kennedy, Edward 61% 34% 27%
42 NE Hagel, Chuck 58% 31% 27%
43 AR Pryor, Mark 58% 31% 27%
44 AL Sessions, Jeff 57% 31% 26%
45 WY Enzi, Michael 56% 30% 26%
46 AR Lincoln, Blanche 58% 33% 25%
47 WA Cantwell, Maria 55% 30% 25%
48 KS Roberts, Pat 54% 29% 25%
49 LA Vitter, David 57% 33% 24%
50 KY McConnell, Mitch 56% 32% 24%
51 MT Baucus, Max 58% 35% 23%
52 WA Murray, Patty 56% 33% 23%
53 NC Dole, Elizabeth 55% 32% 23%
54 NH Gregg, Judd 53% 30% 23%
55 CO Salazar, Ken 55% 33% 22%
56 NV Reid, Harry 57% 36% 21%
57 VA Allen, George 53% 32% 21%
58 VA Warner, John 53% 32% 21%
59 MD Sarbanes, Paul 52% 31% 21%
60 GA Isakson, Johnny 51% 30% 21%
61 IA Harkin, Tom 54% 35% 19%
62 SC Graham, Lindsey 53% 34% 19%
63 CA Feinstein, Dianne 52% 33% 19%
64 PA Specter, Arlen 54% 36% 18%
65 TN Alexander, Lamar 52% 34% 18%
66 MI Levin, Carl 52% 34% 18%
67 OR Smith, Gordon 51% 33% 18%
68 AZ Kyl, Jon 49% 31% 18%
69 FL Nelson, Bill 47% 29% 18%
70 MO Bond, Kit 52% 35% 17%
71 NJ Corzine, Jon 52% 36% 16%
72 GA Chambliss, Saxby 50% 34% 16%
73 IL Durbin, Richard 50% 34% 16%
74 LA Landrieu, Mary 54% 39% 15%
75 NV Ensign, John 49% 34% 15%
76 RI Chafee, Lincoln 53% 39% 14%
77 CA Boxer, Barbara 51% 37% 14%
78 CO Allard, Wayne 49% 35% 14%
79 SC DeMint, Jim 49% 35% 14%
80 MN Coleman, Norm 52% 39% 13%
81 TN Frist, Bill 51% 39% 12%
82 KS Brownback, Sam 50% 38% 12%
83 MI Stabenow, Debbie 48% 36% 12%
84 MA Kerry, John 53% 42% 11%
85 OH Voinovich, George 50% 39% 11%
86 SD Thune, John 52% 42% 10%
87 MO Talent, Jim 48% 38% 10%
88 NH Sununu, John 47% 37% 10%
89 KY Bunning, Jim 47% 38% 9%
90 MT Burns, Conrad 50% 42% 8%
91 AK Murkowski, Lisa 49% 42% 7%
92 NC Burr, Richard 42% 36% 6%
93 MN Dayton, Mark 46% 41% 5%
94 FL Martinez, Mel 43% 39% 4%
95 TX Cornyn, John 40% 36% 4%
96 OK Coburn, Tom 43% 40% 3%
97 OK Inhofe, James 44% 42% 2%
98 NJ Lautenberg, Frank 42% 40% 2%
99 PA Santorum, Rick 45% 44% 1%
100 OH DeWine, Mike 44% 43% 1%
