(USA TODAY) -- Seeking to re-set the presidential race, Donald Trump plans Saturday to unveil a "closing arguments" speech that will include plans for his first few months in the White House, aides said.

Trump's speech in Gettysburg, Pa., will focus on "his positive vision to restore our economy, give government back to the people and outline the immediate steps he will take in the first 100 days to 'Make America Great Again,'" said campaign national policy director Stephen Miller.

As he has throughout his campaign, the Republican nominee is expected to call for tax cuts and fewer government regulations. The New York businessman has also pledged to re-negotiate what he calls bad trade deals and vowed to build a wall along the U.S.-Mexico border to block illegal immigration.

In recent days, Trump has proposed new restrictions on lobbying by former government officials, as well as plans to rebuild the military and upgrade the nation's infrastructure.

Aides did not provide specifics of Trump's speech, scheduled for 11 a.m. ET.

Trump offers his "closing arguments" speech — a late addition to his schedule — amid polls showing him trailing Democratic nominee Hillary Clinton both nationally and in key battleground states.

In the wake of three debates against Clinton, Trump has also contended with allegations from a variety of women claiming he made inappropriate sexual advances toward them. Trump has denied the accusations, and called them part of an effort to "rig" the election against him.

Clinton and other Democrats have criticized Trump for saying he might not recognize the final results of the Nov. 8 election should he lose. Trump said he has concerns about voter fraud and what he calls the bias of the news media.

On social media, Trump cited other polls showing him inching ahead of Clinton. He tweeted: "The media refuses to talk about the three new national polls that have me in first place. Biggest crowds ever - watch what happens!"

After his speech in Gettysburg, Trump hosts rallies Saturday in two politically important states, Virginia and Ohio. On Sunday, he travels to the must-win state of Florida, part of what he and aides described as a stepped-up schedule for the last two-and-a-half weeks of the campaign.

"Right up until the actual vote of November 8th," Trump said Friday in North Carolina. "And then I don't know what kind of shape I'm in but I'll be happy and at least I will have known, win, lose or draw, and I'm almost sure if the people come out we're gonna win."

Miller said Trump's Gettysburg speech is designed to "set the tone" for the final days of the campaign, and that the candidate will argue he is the "change agent" the country needs.

“The Donald Trump campaign is a movement unlike anything we’ve seen in our country’s history," Miller said.