Claire McCaskill is an American politician and member of the Democratic Party who serves as the senior United States Senator from Missouri. She is the first female U.S. Senator elected in Missouri in her own right.
She defeated Republican incumbent Jim Talent in the 2006 election, by a margin of 49.6% to 47.3%. She became the state’s senior U.S. Senator upon the retirement of Kit Bond in 2011 and won a bid for re-election in 2012, defeating Republican Todd Akin by a margin of 54.7% to 39.2%.