Sen. Kamala Harris Kamala HarrisHundreds of lawyers from nation's oldest African American sorority join effort to fight voter suppression Biden picks up endorsement from progressive climate group 350 Action 3 reasons why Biden is misreading the politics of court packing MORE (D-Calif.) on Saturday secured the endorsement of influential Iowa political couple Sue and Bob Dvorsky for her 2020 presidential bid.

The couple has played a key role in Johnson County, which houses the University of Iowa and remains a key area for the state's Democratic voters. Their endorsement came hours before Harris was slated to speak at the Iowa State Fair, a typical stopover for White House hopefuls.

“We've listened. We've read. We've attended. We believe with many of our friends and neighbors that we must get this right. And we are supporting Kamala Harris for President of the United States," the couple said in a statement.

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Bob Dvorsky, a former state senator, and Sue Dvorsky, who served as the Iowa Democratic Party chairwoman, are key influencers in the state and county, CNN noted.

The couple backed then-presidential candidate Barack Obama Barack Hussein ObamaObama warns of a 'decade of unfair, partisan gerrymandering' in call to look at down-ballot races Quinnipiac polls show Trump leading Biden in Texas, deadlocked race in Ohio Poll: Trump opens up 6-point lead over Biden in Iowa MORE during his first White House run in 2007, helping him win the Iowa caucuses in an upset over former Secretary of State Hillary Clinton Hillary Diane Rodham ClintonFox News poll: Biden ahead of Trump in Nevada, Pennsylvania and Ohio Trump, Biden court Black business owners in final election sprint The power of incumbency: How Trump is using the Oval Office to win reelection MORE.

The pair then supported Clinton in the 2016 election, CNN reports.

Their 2020 endorsement comes as nearly all of the 2020 Democratic presidential hopefuls swing through Iowa in their bid to secure voters in the first-in-the-nation caucus state.