SIOUX CENTER, Iowa >> Decrying a Republican “culture of losing,” Florida Gov. Ron DeSantis sought Saturday to weaken former President Donald Trump’s grip on the GOP as tornado warnings interrupted a collision of leading presidential prospects in battleground Iowa.

DeSantis, expected to announce his 2024 presidential campaign any day, briefly flipped burgers and pork chops at an afternoon picnic fundraiser in Sioux Center that drew hundred of conservatives to the northwest corner of the state. From the podium, the 44-year-old governor highlighted his eagerness to embrace conservative cultural fights and sprinkled his remarks with indirect jabs at Trump.

“Governing is not about entertaining. Governing is not about building a brand or talking on social media and virtue signaling,” said DeSantis, who wore a blue button-down shirt without a tie or jacket. “It’s ultimately about winning and producing results.”

Trump, a candidate since November, had hoped to demonstrate his political strength with a large outdoor rally in Des Moines, the capital, later in the day. He canceled the appearance hours before its scheduled start time due to a tornado warning.

Roughly 200 supporters had already gathered at the venue.

“I feel like it’s still Trump’s time,” said Robert Bushard, 76, who said he drove about four hours from St. Paul, Minnesota, to see the former president. Of DeSantis, he said, “He’d be a good president after Trump.”

Republican primary voters across the nation are sizing up DeSantis and Trump, two Republican powerhouses who are among half a dozen GOP candidates already in the race or expected to announce imminently. Trump is well ahead of his rivals in early national polls, and DeSantis is viewed widely as the strongest potential challenger.

Trump was hoping to return to the comfort of the campaign stage after a tumultuous week.

On Tuesday, a civil jury in New York found him liable for sexually abusing and defaming advice columnist E. Jean Carroll and awarded her $5 million. A day later, during a contentious CNN town hall, he repeatedly insulted Carroll, reasserted lies about his 2020 election loss and minimized the violence at the U.S. Capitol on Jan. 6, 2021.

DeSantis has burnished his reputation as a conservative governor willing to push hard for conservative policies and even take on a political fight with Disney, which he highlighted in Sioux Center. But so far, he hasn’t shown the same zest for taking on Trump, who has been almost singularly focused on tearing down DeSantis for months.

On Saturday, DeSantis avoided Trump’s legal entanglements or his falsehoods about the 2020 election, instead highlighting the GOP’s recent string of electoral losses. The Republican Party has struggled in every national election since Trump’s 2016 victory.

“We must reject the culture of losing that has impacted our party in recent years. The time for excuses is over,” DeSantis said. “If we get distracted, if we focus the election on the past or on other side issues, then I think the Democrats are going to beat us again.”

It’s uncertain whether DeSantis’ political successes in Florida can be replicated on the national stage.

Even before he formally enters the race, he’s already facing questions about his ability to court donors and woo voters.

The Iowa visit, his second in two months, was expected to help address concerns about his sometimes awkward personal appeal as he met with Republican officials, donors and volunteers, all under the glare of the national media. But DeSantis devoted little time for selfies or handshakes in Sioux Center, where more than 600 people had gathered to see him.