"Outside of Missouri's mainstream" is the same argument incumbent Sen. Claire McCaskill (D-Mo.) made in a recent ad, indicating the candidate and her party are likely to run lockstep on this attack in Missouri, and consider it to be a potent one.
Akin won the Missouri GOP Senate primary last week, defeating businessman John Brunner and former state Treasurer Sarah Steelman (R).
McCaskill faces a tough fight, with the last two public polls showing Akin ahead. Outside GOP-affiliated groups have already spent $15 million against her in the contest.