Senator Claire McCaskill (D-MO) in Deep trouble for Reelection, Trails All Three Republican Challengers Brunner, Steelman & Akin

Big MO not on the side of Senator Claire McCaskill in reelection bid in Missouri.

Incumbent Sen. Claire McCaskill (D-Mo.) trails all three GOP opponents in the latest poll. The full poll results can be seen HERE. John Brunner (R) holds an 11 point margin over McCaskill, leading by a 52%  to 41%. Former state Treasurer Sarah Steelman (R) leads by an 8 point advantage 49% to 41%. Rep. Todd Akin (R) leads by 5 points with a 49%  to 44%  margin. In all three cases, McCaskill is polling well under 50%, in two instances she is in the low 40′s. Can you say vulnerable? Just like Barack Obama is Missouri, McCaskill is polling poorly with Independents.

Sen. Claire McCaskill (D-Mo.) trails all three of her potential Republican rivals, according to a new survey conducted for two Missouri news outlets, cementing her status as this cycle’s most vulnerable incumbent.

Businessman John Brunner (R) holds the largest advantage over McCaskill, leading by a 52 perent to 41 percent margin. Former state Treasurer Sarah Steelman (R) leads by a 49 percent to 41 percent margin. And Rep. Todd Akin (R) leads by a 49 percent to 44 percent margin.

McCaskill’s big problems come among independent voters. She scores just 40 percent among independents against Akin, and she’s mired in the mid-30s when she’s matched up with Brunner and Steelman. And while McCaskill has said she would like President Obama to campaign with her, Obama wouldn’t be much of an advantage — the poll shows Obama trails Mitt Romney by a 51 percent to 42 percent margin.

Missouri is a key US Senate targeted pickup state for the GOP in 2012 in order for the Republicans to regain control of the Senate. McCaskill may be the most vulnerable Democrat Senator; however, there are many retiring Democrats that are allowing for open seats that will most certainly by GOP gains like in Nebraska, Virginia and North Dakota.

McCaskill said that she was going to skip the Democrat National convention and stay home and campaign. From the looks of it, McCaskill has shown the “Show Me” state enough. The real question that needs to be answered is how did a battleground toss up state like Missouri become solid red in such a short period of time? As The Other McCain ponders, if a mid-west state like Missouri has changed so much, how do Democrats and Obama expect to win in others like Iowa, Ohio, Indiana and Wisconsin? Good question.