Amy Klobuchar won re-election to a second term in the U.S Senate Tuesday, easily defeating Republican challenger Kurt Bills.

CBS, the AP and other organizations made the call for Klobuchar within minutes after the polls closed in Minnesota at 8 p.m.

Bills, a high school teacher and one-term state representative, won the Republican nomination with support from Ron Paul supporters but couldn't muster enough support to overcome Klobuchar's statewide popularity.