Donald Trump, the frontrunner for the Republican presidential nomination, told his supporters on Saturday to "go into" Philadelphia and two other Democratic-run cities to "guard the vote" in 2024, repeating his unfounded claims of widespread election fraud in 2020 as justification for the call to action.

Speaking at a campaign event in Iowa, Trump said it was important to scrutinize the vote in the battleground states likely to determine the general election. He singled out the biggest cities in Michigan, Pennsylvania and Georgia.

“So the most important part of what’s coming up is to guard the vote. And you should go into Detroit and you should go into Philadelphia and you should go into some of these places, Atlanta,” Trump said in Ankeny, a suburb of Des Moines.

Trump’s comments foreshadow what is likely to be a contentious election in November 2024. Despite the failure of dozens of lawsuits filed by Trump and his allies challenging the outcome in 2020, Trump continues to claim, without evidence, that he lost to U.S. President Joe Biden due to fraud.