FILE - In this March 2, 2012, file photo Republican Sen. Olympia Snowe, R-Maine, is applauded by her husband, Jock McKernan, left, and others as she waves goodbye at the end of a news conference in ... more 
FILE - In this March 2, 2012, file photo Republican Sen. Olympia Snowe, R-Maine, is applauded by her husband, Jock McKernan, left, and others as she waves goodbye at the end of a news conference in South Portland, Maine, where she announced she would not seek a fourth term. Republican Sen. Lisa Murkowski, R-Alaska, (not shown) a moderate in an era of paralyzing partisanship, could be a natural heir to the centrist role played by Snowe at a time when their party is hurting for female leaders. (AP Photo/Robert F. Bukaty, File) less 
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Associated Press | Photo By Robert F. Bukaty, File
Sat, Mar 10, 2012 10:55 AM EST