Arizona state House Speaker Andy Tobin (R) lost to Rep. Ann Kirkpatrick (D-Ariz.) in the state's 1st District Tuesday.
The race, which was widely considered one of the nation's most competitive , was waged across the swinging, sprawling rural district. Americans for Prosperity, a group funded by the billionaire conservative brothers Charles and David Koch's network, spent heavily against Kirkpatrick.
Tobin beat state Rep. Adam Kwasman and rancher and businessman Gary Kiehne in the August GOP primary, in which the U.S. Chamber of Commerce stepped-in to elevate Tobin.
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