LAS VEGAS — Republican Texas Gov. Greg Abbott has been in more than a few debates during his decades-long political career.

Abbott won three terms as state attorney general before winning election and two re-elections as Texas governor.

So his advice to former President Trump ahead of Tuesday’s first and potentially only debate between the GOP presidential nominee and Vice President Kamala Harris — the Democratic Party’s nominee — is “Let Harris talk.”

“The more she talks without talking into a teleprompter, the more she shows America that she’s really not up to the task,” Abbott emphasized in an interview with Fox News Digital along the sidelines of the Republican Jewish Coalition’s annual leadership meeting in Las Vegas.

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Abbott asserted that “if he [Trump] lets her talk and if he focuses on three issues — one is the border, another is the inflation caused by Harris and [President] Biden, and the other is the rapid crime that we see in some cities, caused by people like Harris and [her running mate, Minnesota Gov. Tim] Walz — Americans are going to understand the last thing they want to do is to have Kamala Harris running our country, because it would be run into the ground.”

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The governor endorsed Trump for the 2024 GOP presidential nomination last November — before the start early this year of voting in the Republican primaries — when the two leaders teamed up for an event along the U.S.-Mexico border.

Earlier this week, Abbott was on the campaign trail in battleground Arizona on behalf of Trump. And he says he will continue to make the case for the former president.

Former President Trump speaks at a campaign rally at 1st Summit Arena at the Cambria County War Memorial in Johnstown, Pennsylvania, on Aug. 30. (AP Photo/Rebecca Droke)

“I will remain on the campaign trail for President Trump because no one knows more about what’s going on on the border than I do,” said the border state governor.

Border security has also long been a top issue for Abbott, who has sparred repeatedly with the Biden administration. And border security is all but certain to remain a top issue for Abbott, who will start gearing up next year for a 2026 run for a fourth-straight four-year term steering Texas.

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Abbott charged that “Americans need to learn the reality, both of how the policy changed under Biden and Harris and what Kamala Harris would do to pretty much put America on a pathway of destruction.”

If the former president wins back his old job, Abbott predicts a second Trump term would be productive.

“During his first term, we worked well, especially on border security-based issues. But it’s going to be better this time in part because he will come to office knowing far more than he did when he entered office last time, knowing which levers to pull, what can be done, and the strategies and how to quickly take care of it,” the governor said.

“I’ve talked to him in recent times about what his plans are. He’s going to be far more aggressive this time than he was last time because he has to find a way to course correct from all the damage caused to the United States by Harris and Biden,” Abbott argued.

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Texas Gov. Greg Abbott is touting a sharp drop in border crossings in 2024, arguing that it is due to the efforts of his state rather than the policies of the Biden administration, which he says have hurt, not helped, the effort to secure the border as the administration has sought to “tear down” what Texas has done.

“Texas has the largest border of any state in the United States of America. And, in the early years of the Biden administration, it was Texas that was being overrun by the illegal immigration policies that were promoted and implemented by [President] Biden and by [Vice President Kamala] Harris,” he said in an interview with Fox News Digital.

Abbott pursued an aggressive strategy under Operation Lone Star, in which he surged troops and resources to the border, building its own border wall after the Biden administration stopped construction, setting up buoys in the Rio Grande and installing razor wire fence. It has led to a number of legal battles in court between the state and the Biden administration. The White House accused Abbott of putting migrants and Border Patrol at risk and impeding federal law enforcement.

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After three years of a historic crisis at the southern border, with records of encounters being repeatedly smashed since Biden entered the White House, numbers dropped dramatically over the summer.

The White House tied the sharp drop in encounters to an executive order Biden signed in June which restricted asylum entries into the U.S. — with encounters in July the lowest since September 2020.

The administration has argued that it needs more funding and reforms from Congress, but that Republicans have voted against them for political purposes. Specifically, officials have cited a bipartisan bill that would have increased funding while putting some limits on entries. It has failed to make it out of the Senate.

“For months, the Biden-Harris Administration worked with a bipartisan group of Senators to craft a historic bipartisan border security agreement that would have added thousands of frontline personnel to the border — but Congressional Republicans voted against that agreement twice — proving that they are more interested in cynically playing politics than securing the border,” the White House said last month. “The Biden-Harris Administration has taken effective action, and Republicans continue to do nothing.”

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But Abbott has said that the drop in Texas has had nothing to do with those policies.

“In Texas, illegal immigration has gone down about 85%, while it is higher than that in Arizona, New Mexico and California,” he said. “So it shows that what Texas is doing is working despite the fact that Biden and Harris have challenged Texas every step of the way to try to tear down what we built.”

Abbott’s comments come amid an ongoing political battle over who is responsible for the border crisis and which presidential candidate is better positioned to fix it.

Harris has recently claimed that she is the better candidate to solve the issues at the border, zeroing in on the bipartisan Senate bill and blaming former President Trump for its failure.

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“As president, I will bring back the bipartisan border security bill that he killed, and I will sign it into law. I know… we can live up to our proud heritage as a nation of immigrants and reform our broken immigration system. We can create an earned pathway to citizenship and secure our border,” she said at the Democratic National Convention.

Abbott said that Harris believes in “open border policies” and said he would be supporting Trump in the November election.

“Americans need to learn the reality, both of how the policy changed under Biden-Harris and what Kamala Harris would do to pretty much put America on a pathway of destruction,” he said.