President Trump has a “dangerous form of megalomania” and an “intent on taking over everything,” never-Trump rival William Weld says, as the president’s allies in several states moved to cancel Republican primary contests.

“The effort to stop elections — it kind of has a foreboding feel to it,” Weld told the Herald on Sunday, saying all of the machinations by Trump are symptoms of a “dangerous form of megalomania.”

“This is a recurring theme that people don’t have any choice,” Weld said. “That kind of sums up his approach — ‘Wouldn’t it be nice if we didn’t have elections?'”

Weld, a Canton resident who was elected twice in the 1990s as the Bay State’s governor, is one of now three Republicans who is mounting a primary against Trump. Former U.S. Rep. Joe Walsh announced a run last month and former South Carolina Gov. Mark Sanford jumped in on Sunday.

As the field grows, the number of Republican primaries is shrinking, as various states such as Sanford’s own South Carolina, have canceled their GOP primaries in a blow to the Republicans hoping to unseat Trump.

Weld added, “He’s intent on taking over everything. … He wants to be the only decision maker.”

Nevada and Kansas also have announced recently that they won’t hold Republican primaries.

Weld tweeted on Sunday, “Canceled primaries? What are you afraid of, Mr. No-Show? Intelligent, experienced, honest and decent competitors? Now more than ever, @realDonaldTrump, you can run but you cannot hide. #LetTheGamesBegin.”

Walsh, a onetime Tea Party darling who served one term in Congress and then went on to host a conservative radio show, tweeted, “Like a mob boss, @realDonaldTrump orders the elimination of primaries. This is wrong. This is undemocratic. This is what a political party does when it serves a King. Every Republican should oppose this.”

Weld, who was the Libertarian Party’s vice presidential nominee in 2016, has long been known for socially moderate and fiscally conservative politics, small-government views he says run contrary to the populist Trump.

“He’s on the opposite side of the party,” Weld said. “His first reaction is to use government power against individuals.”

Trump maintains fairly low approval ratings in general, with a RealClearPolitics polling average finding 42.5% approving of the president and 53.8% disapproving. But the Republican electorate overwhelmingly supports Trump, a fact Weld acknowledged, saying a big part of his plan involves courting independents who can vote in open primaries.

“My strategy very much includes the states where crossover voting is permitted,” said Weld, adding that he’s even hoping for Democrats to temporarily re-register as Republicans to vote for him. “They can vote against Trump twice.”

Weld said his strategy over the next several months leading up to the first-in-the-nation New Hampshire primary will be to chase votes in New England and the mid-Atlantic region, as well as in California, where it’s possible the state might bar Trump from being on the ballot because he hasn’t released his tax returns.

Weld said he welcomes Sanford into the primary race, saying he hopes the growing field attracts more media attention. Weld added that he suspects Trump doesn’t really take him, Walsh and Sanford seriously.

“I don’t think he’s concerned at all,” Weld said. “But I think he should be.”