President Trump on Monday said the country's "long-awaited chance" to get rid of ObamaCare starts with a critical House vote Thursday on the GOP's healthcare proposal.

It's also "the seventh anniversary of ObamaCare's very painful passage," Trump noted during a rally in Louisville, Ky., Monday evening.

“This is our long-awaited chance to finally get rid of ObamaCare. Our long-awaited chance. We’re gonna do it.”

During the rally, Trump questioned what the alternative is to getting rid of former President Obama's signature healthcare legislation.

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"The alternative is what you have," he said. "What you have is nothing. The worst. It's the big lie."

"I like him," Trump said. "And I look forward to working with him so we can get this bill passed in some form, so that we can pass massive tax reform, which we can't do until this happens. So we got to get this done before we can do the other."

Paul has dubbed the GOP healthcare plan "ObamaCare lite" and has vowed to vote against the leadership plan once it reaches the Senate. On Sunday, the Kentucky Republican said he doesn't believe the proposed GOP legislation will pass Congress.

"Hey, Mitch! Are we going to be OK? Healthcare going good?" Trump asked from the stage.

The president also blasted Democrats, saying they ignored the public and voters when they "jammed a massive failed healthcare takeover right through Congress."

"It's time for Democrat leaders in Washington to take responsibility for the disaster they and they alone created," Trump said.

ObamaCare has been a "disaster," the president added.

"Thursday is our chance to end ObamaCare and the ObamaCare catastrophe and begin delivering the reforms our people deserve," he said.

"And remember, we're going to negotiate, and it's going to go to the Senate and back and forth. The end result is going to be wonderful and it's going to work great."