US Democratic candidate Hillary Clinton has said she no longer cares what her Republican rival Donald Trump might say and will focus on issues instead.
"I debated him for four and a half hours," she said, recalling their acrimonious exchanges. "I don't even think about responding to him anymore."
She was speaking to reporters aboard her campaign plane.
Trump used a rally in Gettysburg to promise curbs on lobbying and new trade and climate change negotiations.
With just 16 days until the election, much of the recent focus has been on controversies linked to his campaign.
On Saturday, he again promised to sue every woman who had accused him of sexual assault or inappropriate behaviour as soon as his presidential campaign was over.
More polls on Sunday suggested the tycoon lags behind Mrs Clinton in key battleground states.
Her campaign has predicted this is going to be "the biggest election in American history".
Campaign manager Robbie Mook told Fox News Sunday: "More people are going to turn out than ever before."