Four states are expected to cancel their Republican presidential primaries and caucuses in 2020, removing any potential speed bumps to President Trump’s run for reelection.

Republican parties in South Carolina, Nevada, Arizona and Kansas are likely to finalize the cancellations this weekend, three GOP officials told Politico.

Trump advisers noted that the parties of the incumbent president have long canceled primaries and said it will save the state party’s money.

“It would be malpractice on my part to waste money on a caucus to come to the inevitable conclusion that President Trump will be getting all our delegates in Charlotte,” said Nevada GOP Chairman Michael McDonald. “We should be spending those funds to get all our candidates across the finish line instead.”

But the president’s long-shot primary challengers accused his allies of trying to rig Trump’s path to renomination.

“Trump and his allies and the Republican National Committee are doing whatever they can do to eliminate primaries in certain states and make it very difficult for primary challengers to get on the ballot in a number of states,” said former Illinois Rep. Joe Walsh, who launched his primary campaign against the president last month. “It’s wrong, the RNC should be ashamed of itself, and I think it does show that Trump is afraid of a serious primary challenge because he knows his support is very soft.

[Related: Beheading journalists, the N-word, and racist Obama voters: Joe Walsh's long history of incendiary statements]

“Primary elections are important, competition within parties is good, and we intend to be on the ballot in every single state no matter what the RNC and Trump allies try to do,” he said. “We also intend to loudly call out this undemocratic bull on a regular basis.”

Former Massachusetts Gov. Bill Weld said Republican voters “deserve better.”

“We don’t elect presidents by acclamation in America. Donald Trump is doing his best to make the Republican Party his own personal club,” Weld said.

Officials from the Republican National Committee said they were not part of the decisions.