03/06/2009 05:12 am ET Updated May 25, 2011

The Most Powerful Women In America Are GOP Senators: Nate Silver

No, not Nancy Pelosi, Hillary Clinton, Valerie Jarrett, and Christina Romer. Instead, the most powerful women in America might be the club of four Republicans in the United States Senate: Olympia Snowe, Susan Collins, Lisa Murkowski, and Kay Bailey Hutchison.

Snowe has voted with the Administration 91% of the time according to new Obama Support Score (OSS), the derivation of which I'll explain in a moment. This is, by some margin, the highest score for any Senate Republican and also higher than that of a handful of Democrats. Collins is second on the list, with an OSS of 72%, and Murkowski is fourth among Republicans at 70%. While Hutchison is further down the list, she is clearly angling to be a thought-leader in the GOP and is likely to be a wild card on certain issues, having voted with the administration, for instance, on SCHIP and the Ledbetter Fair Pay Act.

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