Amy Klobuchar speaks before Iowa Caucus

Democratic presidential candidate Sen. Amy Klobuchar, D-Minn., spoke during an appearance in Mason City, Iowa on Sunday, Feb. 2, 2020. 

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Democratic presidential candidate Sen. Amy Klobuchar, D-Minn., spoke during an appearance in Mason City, Iowa on Sunday, Feb. 2, 2020.
Democratic presidential candidate Sen. Amy Klobuchar, D-Minn., spoke during an appearance in Mason City, Iowa on Sunday, Feb. 2, 2020.
Minnesota Governor Tim Walz showed off his Minnesota themed socks and Grateful Dead shoes before Democratic presidential candidate Sen. Amy Klobuchar, D-Minn., spoke during an appearance in Mason City, Iowa on Sunday, Feb. 2, 2020.
Democratic presidential candidate Sen. Amy Klobuchar, D-Minn., middle, was greeted by Minnesota First Lady Gwen Walz as Minnesota Governor Tim Walz hugged Klobuchar's daughter, Abigail, before Klobuchar spoke during an appearance in Mason City, Iowa on Sunday, Feb. 2, 2020.
Democratic presidential candidate Sen. Amy Klobuchar, D-Minn., took the stage after Minnesota Governor Tim Walz introduced her during an appearance in Mason City, Iowa on Sunday, Feb. 2, 2020. On the left is her husband John Bessler.
Democratic presidential candidate Sen. Amy Klobuchar, D-Minn., spoke during an appearance in Mason City, Iowa on Sunday, Feb. 2, 2020.
Democratic presidential candidate Sen. Amy Klobuchar, D-Minn., spoke during an appearance in Mason City, Iowa on Sunday, Feb. 2, 2020.
Supporter Paige Indritz, middle, listened as Democratic presidential candidate Sen. Amy Klobuchar, D-Minn., spoke during an appearance in Mason City, Iowa on Sunday, Feb. 2, 2020.
Nancy Roddy of Mason City wiped away tears as Democratic presidential candidate Sen. Amy Klobuchar, D-Minn., spoke during an appearance in Mason City, Iowa on Sunday, Feb. 2, 2020.
Amy Klobuchar signs are seen near a brass instrument sculpture in honor of "The Music Man" movie musical, based on Mason City, Iowa. Or in the movie, a fictional River City, Iowa