MOSINEE, Wis, Sept 8, (AP): With just days to go before his first - and likely only - debate against Vice President Kamala Harris, former President Donald Trump posted a warning on his social media site threatening to jail those "involved in unscrupulous behavior” this election, which he said would be under intense scrutiny.

"WHEN I WIN, those people that CHEATED will be prosecuted to the fullest extent of the Law, which will include long term prison sentences so that this Depravity of Justice does not happen again,” Trump wrote, again sowing doubt about the integrity of the election, even though cheating is incredibly rare. "Please beware,” he went on, "that this legal exposure extends to Lawyers, Political Operatives, Donors, Illegal Voters, & Corrupt Election Officials.

Those involved in unscrupulous behavior will be sought out, caught, and prosecuted at levels, unfortunately, never seen before in our Country." Trump's message represents his latest threat to use the office of the presidency to exact retribution if he wins a second term. There is no evidence of the kind of fraud he continues to insist marred the 2020 election; in fact, dozens of courts, Republican state officials and his own administration have said he lost fairly.

Just days ago, Trump himself acknowledged in a podcast interview that he had indeed "lost by a whisker.” While Trump's campaign aides and allies have urged him to keep his focus on Harris and make the election a referendum on issues like inflation and border security, Trump in recent days has veered far off course.

On Friday, he delivered a stunning statement to news cameras in which he brought up a string of past allegations of sexual misconduct, describing several in graphic detail, even as he denied his accusers’ allegations. Earlier, he had voluntarily appeared in court for a hearing on the appeal of a decision that found him liable for sexual abuse, turning focus to his legal woes in the campaign's final stretch.

Earlier Saturday, Trump had leaned into familiar grievances about everything from his indictments to Russia's meddling in the 2016 election as he campaigned in one of the most deeply Republican swaths of battleground Wisconsin. "The Harris-Biden DOJ is trying to throw me in jail - they want me in jail - for the crime of exposing their corruption,” Trump claimed at an outdoor rally at Central Wisconsin Airport, where he spoke behind a wall of bullet-proof glass due to new security protocols following his July assassination attempt.