http://www.thedailybeast.com/articles/2012/03/02/why-the-gop-won-t-win-the-senate.html?google_editors_picks=true
When the votes were counted, Maine Senator Olympia Snowe stood alone, the only Republican to oppose a hotly contested amendment that would have granted employers the right to withhold insurance coverage for any health service they find objectionable for religious or moral reasons. Senate Minority Leader Mitch McConnell runs a tight ship, and that was one of the reasons Snowe announced earlier this week that she is ending her campaign for reelection and leaving the Senate. As one of the few moderates left in the Republican caucus, she had grown tired of the pressure to always toe the line. Snowe’s isolation was stark as the amendment was voted down, 51 to 48: almost all Democrats were on one side and Republicans on the other.
The tight tally “is just another sign of polarization,” says Jack Pitney, a professor of American politics at Claremont McKenna College. “The center is a lonely place and getting lonelier with every election.”
In the lead-up to the vote, Republicans portrayed the “Respect for Rights of Conscience Act” as an effort to keep government out of health-care decisions while Democrats said it was so broadly written that employers citing moral objections would be empowered to cut off everything from prenatal care for children of single mothers to HIV screening. When Snowe went public with her decision to vote against the measure, the question was whether other GOP moderates would follow in her footsteps. None did, not even Susan Collins, her fellow home-state senator. The two women, who typically vote in lockstep, are known as the “Maine twins.”
Republicans looked to Snowe to provide political cover on thorny social issues, and Democrats knew she could generally be counted on to bring along a handful of additional Republican votes once she was persuaded on an issue. Her support of ending the ban on gays in the military was key and she helped persuade Massachusetts Sen. Scott Brown to vote with Democrats on the issue. He is up for reelection in November and looking for ways to demonstrate independence from his party in a state that votes Democratic in a presidential election year. Brown though stuck with his party on the so-called Blunt Amendment, named after its principle sponsor, Sen. Roy Blunt of Missouri.