Donald Trump appeals to voters in Wisconsin ahead of debate with Kamala Harris

Wisconsin is a key battleground state (AP)

With just days to go before his first – and likely only – debate against Kamala Harris, former US president Donald Trump aired familiar grievances about everything from his indictments to efforts to keep him off the ballot as he campaigned in a staunchly Republican part of battleground state Wisconsin.

Speaking at an outdoor rally at Central Wisconsin Airport, Mr Trump claimed: “The Harris-Biden DoJ (Department of Justice) is trying to throw me in jail – they want me in jail – for the crime of exposing their corruption.”