President Donald Trump took his midterm campaign to Clarksville, Tennessee, on Saturday, with Election Day less than three weeks away.

Trump campaigned for Republican Sen. Bill Hagerty and for Sen. Marsha Blackburn, who is running for governor, Fox News reported. He touted billions of dollars in new factory investment and his administration's work on crime. He also called Iran's leaders "crazy" and floated the idea of a "Trump Ocean."

Musician Kid Rock opened the rally. "Literally, President Trump could walk across the Cumberland River, and tomorrow the headline would say President Trump refuses to swim," he joked.

Trump strayed from his script often. At one point he mocked former Vice President Kamala Harris, sarcastically calling her "beautiful," The Independent reported. Some women standing behind him laughed.

Republicans face a rough forecast for the Nov. 3 elections, CBS News reported. High fuel prices are a major worry for voters. The day before the rally, Trump announced a deal to let Russia sell diesel to the U.S. to bring prices down. On his way to Tennessee, he told reporters Ukraine should get a new president.

The rally was part of a swing through Republican-leaning states. Trump plans rallies in Montana and Arizona next week, The Hill reported.

Tennessee is solidly Republican. But Hagerty's seat and the open governor's race are both on the ballot. Party leaders hope big crowds will lift turnout in close House and Senate races elsewhere.

Trump has kept up a busy travel schedule even as he deals with the Iran war and the fallout from the diesel deal.

What we know: Trump rallied in Clarksville for Tennessee Republicans on Saturday.
What we don't: whether the rally will lift turnout in close races.