Donald Trump has rebooted his campaign with a major cash injection — and leadership shakeup — in an effort to lock up the GOP nomination before a potential defeat to Sen. Ted Cruz on a second or third ballot at the convention in July.

Trump has spent the last month taking pains to present a more traditionally presidential version of himself on the stump, and he is now clearly looking to run a more conventional campaign. The outspoken candidate authorized a $20 million budget for the month of May.

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Paul Manafort, Trump’s recently hired convention manager, “told Trump he’s going to have to spend a bunch more money if they’re going to get to 1,237 — especially if they’re going to win California,” a source close to the Trump campaign reportedly told Politico.

[lz_table title=”Current Delegate Count”]Trump
744
|Cruz
559
|Kasich
144
|Delegates Remaining
838
[/lz_table]

Twenty million dollars is the most money Trump has spent in a single month since he launched his campaign. Indeed, FEC filings released on March 21, 2015 showed that from June 2015 — when Trump declared his candidacy — through February 29, 2016, Trump’s campaign committee spent only $33,399,873. But the fact that Trump could win the GOP for less than $60 million would shock the political punditocracy.

The new budget will be largely spent on TV advertising in California in the run-up to the state’s June 7 primary, in which a total of 172 delegates are up for grabs. This is another stark departure from the Trump campaign’s prior strategy, which shunned paid TV advertising in favor of the free press coverage with which the media has been happy to provide Trump.

In charge of the $20 million purse strings will be recent Trump campaign hires Manafort and Rick Wiley, to whom Trump reportedly handed full control of his campaign in a meeting at his headquarters in Manhattan on Saturday.

Manafort, a respected GOP consultant who has advised the general election campaigns of every Republican candidate since Gerald Ford, was brought on as convention manager by Trump in March after it became clear his politically inexperienced team helmed by Corey Lewandowski was no match for the Cruz campaign in gaming the delegate system.

Wiley was in turn hired by Manafort during the second week of April to serve as the Trump campaign’s political director. It seems some, including Trump’s national field director Stuart Jolly, who resigned in protest on Monday, see this reshuffle as nothing short of a Trump-sanctioned coup, replacing Trump’s loyal — though relatively amateur — team with political insiders.

Indeed, Manafort also plans on hiring at least five new staffers for Trump’s national press office, a source close to the Trump campaign reportedly told Politico. This is a decision typically made by a campaign manager, which suggests Lewandowski has been effectively supplanted by Manafort.