One of the nation's most popular governors, Sebelius is known for coalition building and working across the aisle.

She took on the coal industry by blocking new coal-fired power plants in Kansas, citing global-warming concerns. Big Coal slapped back, comparing her to Vladimir Putin, Hugo Chavez, and Mahmoud Ahmadinejad.

Upside | The Kansan alternative-energy promoter could bill herself as the wizard of windmills ... and make "Over the Rainbow" her campaign theme.

Downside | Washington isn't Kansas, Toto.