McCaskill, the first-term incumbent Democratic senator, trails all three of her likely Republican challengers, according to a poll released over the weekend. It shows she would lose to GOP frontrunner John Brunner by 11 percentage points if they were matched up today. She would fall to Sarah Steelman or Todd Akin as well, though by smaller margins. Further, her “unfavorable” rating is higher than her “favorable,” and some of her worst numbers are among all-important independent voters. The poll of 625 registered Missouri voters suggests a key source of McCaskill’s problems is her support of President Barack Obama
No matter who wins the Missouri Republican nomination to the U.S. Senate on Aug. 7, Democrat Claire McCaskill is running from behind.