Former New York City Mayor and Democratic presidential candidate Mike Bloomberg unveiled a series of anti-Trump billboards in Phoenix and Las Vegas ahead of President Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE campaign stops on Friday.

The digital billboards say phrases like "Donald Trump cheats at golf" and "Donald Trump’s wall fell over.”

Trump had a rally in Phoenix this week. We made sure there was a nice gift waiting for him! pic.twitter.com/a8juK5ATIM — Team Bloomberg (@Mike2020) February 21, 2020

ADVERTISEMENT

New Federal Election Commission (FEC) filings uploaded last month show Bloomberg contributed a total of $464 million to his own campaign, more than double the amount raised by Trump or any other presidential candidate. According to ad tracking service Kantar/CMAG, Bloomberg's campaign has spent more than $415 million since joining the race late in November.

Bloomberg recently surged in polls since spending hundreds of millions of his own money in an advertising strategy targeting Super Tuesday states.

Bloomberg is taking a unique campaign approach in putting resources into ads against the president while the primary election is reaching its peak. The two New York City billionaires show particular resentment for each other, with Trump dubbing Bloomberg "mini Mike” during tweet storms.

The ad push also comes days after a lackluster debate performance in which each of Bloomberg's Democratic opponents piled on him, criticizing his record. Perhaps the most stinging attack came from Sen. Elizabeth Warren Elizabeth WarrenBiden's fiscal program: What is the likely market impact? Warren, Schumer introduce plan for next president to cancel ,000 in student debt The Hill's 12:30 Report - Presented by Facebook - Don't expect a government check anytime soon MORE (D-Mass.) during the first moments of the debate.

“I’d like to talk about who we’re running against: a billionaire who calls women 'fat broads' and 'horse-faced lesbians,'” Warren said in her opening remarks. “And no, I’m not talking about Donald Trump — I’m talking about Mayor Bloomberg.”