In this Friday, Jan. 3, 2020 file photo, Democratic presidential candidate Joe Biden, right, and Rep. Abby Finkenauer, D-Iowa, center, smile during a campaign rally at the University of Dubuque, in Dubuque, Iowa. Iowa Democrat Abby Finkenauer is running for Republican Chuck Grassleys U.S. Senate seat. The one-term former congresswoman hopes her blue-collar credentials will propel her forward in a state that has grown more conservative over the years. (AP Photo/Andrew Harnik) ** FILE **
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