Democratic U.S. presidential candidates Senator Amy Klobuchar criticizes South Bend Mayor Pete Buttigieg at the 2020 campaign debate at Loyola Marymount University in Los Angeles, California, U.S., December 19, 2019. REUTERS/Mike Blake

WASHINGTON (Reuters) - U.S. Senator Amy Klobuchar, who is running for the Democratic nomination for president, raised $11.4 million in the fourth quarter of 2019, more than doubling the previous quarter’s amount, according to a statement from her campaign.

Klobuchar’s polling numbers have increased in recent weeks after two highly-praised debate performances.