Trump jokes about his own impeachment, accuses Democrats of already trying to take down Kavanaugh

"What the Dems did to Brett and his family is a national disgrace," Trump said.

"Last week they were saying impeach, for what? For what?" Trump said.

"And besides I have to go first right?" half-joking at his own expense. "Even though we’ve done nothing wrong except create one of the greatest economies in the history of our country."

The president again accused Democrats of seeking to destroy Kavanaugh since the moment he was announced.

"What the Dems did to Brett and his family is a national disgrace," Trump said, "including the phony protesters that got paid and now they want to protest because they didn’t get paid and so they want their money, see that’s a real protest."

When he railed against Dianne Feinstein, mocking her denial of leaking Christine Blasey Ford’s letter, the crowd broke into "lock her up chants."

But, this time, the chants seemed to be directly targeted at Feinstein (not Clinton), something the president also observed: "I think they’re talking about Feinstein."

"Did she leak it? 100 percent," Trump said and then quickly qualified: "I don’t want to get sued. 99 percent. Now I can’t get sued."

He offered a special shout-out to Iowa’s Chuck Grassley, who he called "an Iowa legend," a "tough cookie" and a "great person."

Trump continued to call the Democrats the "party of crime," and said they will plunge the country into poverty and chaos.

"If Democrats take control they will try to reverse our amazing progress and plunge our country into gridlock and maybe into poverty and ultimately into chaos," Trump said.

The president also took a swipe at Senator Elizabeth Warren, saying Democrats have gone "so far left" that they consider "Pocahontas to be a rationale person," Trump said.

He added: "I hope she runs. ... We can finally get down to the fact if she has Indian blood. ... Her mother says she has tall cheek bones."

In Iowa, corn is king

As he was expected to do, President Trump announced that the EPA will be easing regulations to allow for the year-round sale of ethanol.

"We’re going with E15 year round, okay, I made the promise to you during the campaign, promises made promises kept," Trump said to wild cheers from the crowd.

The timing of move, just a month ahead of the midterms, would appear to be an effort by the president to show farmers in America’s heartland that he’s still got their back.

The largest cheer of the night came when the president mentioned Nebraska, which prompted the Nebraskans in the crowd to loudly cheer in reply.

The president noticed the loud cheering and did a call-and-response with the crowd to see who was from Iowa and who was from Nebraska. And the Nebraska cheers were much louder. The president then concluded that he didn’t care.

"All I know is we have a lot of farmers in both and our administration is protecting ethanol, today we are unleashing the power of E15 to fuel our country all year long," Trump said.

Even though the audience seemed Nebraska-heavy, President Trump urged Iowans to get out and vote – and do so early.

"You can do early voting in Iowa, just go, get it over with," Trump said. "Early vote, go do it immediately, then you don’t need to listen to me anymore."

The president called on the audience to vote for the Republican candidates up for election, including Kim Reynolds, David Young and Rod Blum. Reynolds came up on the stage and gave brief remarks, expressing support for Kavanaugh.