Donald Trump Donald John TrumpBiden leads Trump by 36 points nationally among Latinos: poll Trump dismisses climate change role in fires, says Newsom needs to manage forest better Jimmy Kimmel hits Trump for rallies while hosting Emmy Awards MORE on Thursday joked that he'll be taking a "nice long vacation" if his poll numbers don't go up by November.

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"I just keep doing the same thing I'm doing right now," the GOP presidential nominee said when asked on CNBC how he would close the gap in battleground states where he is trailing Democrat Hillary Clinton Hillary Diane Rodham ClintonBiden leads Trump by 36 points nationally among Latinos: poll Democratic super PAC to hit Trump in battleground states over coronavirus deaths Battle lines drawn on precedent in Supreme Court fight MORE.

"And at the end, it's either going to work or I'm going to have a very, very nice long vacation."

Support for Trump has been dropping in polls following last month's Democratic National Convention, and he trails Clinton both nationally and in several battleground states.

Clinton has 48 percent support nationally to Trump's 40.3 percent in the RealClearPolitics average.

Trump has created several controversies in recent weeks. He faced bipartisan criticism for his attacks on the family of Humayun Khan, an Army captain killed in Iraq in 2004.

Trump last week declined to endorse Speaker Paul Ryan Paul Davis RyanKenosha will be a good bellwether in 2020 At indoor rally, Pence says election runs through Wisconsin Juan Williams: Breaking down the debates MORE (Wis.) and other top Republican lawmakers before eventually backing them days later.

And earlier this week, he drew criticism after suggesting that gun rights supporters could take action against Clinton, a remark many took as advocating violence.