For Mitt Romney, campaigning in Michigan should be a happy experience of fighting on home turf. He grew up in Detroit and his father was the state's Governor and a top car executive.
As Romney touched down to woo Michigan voters in the next stage of his quest to become the Republican presidential nominee, he certainly treated it like a homecoming. At a rally in Grand Rapids, Michigan's second largest city, Romney even spied two former high school friends in the waiting crowd. "Any old girlfriends here?" he asked. "Got to be careful. Ann [his wife]'s not here today. Don't tell!"
But campaign humour - especially about his marriage - does not come naturally to the straitlaced Romney. The joke fell flat. Far from being friendly territory, Michigan is now shaping up to be a potential disaster.
As little as a week ago Michigan's vote on February 29 was seen as a "firewall" for Romney ahead of the vital "Super Tuesday" contests on March 7. It was a virtually guaranteed win that would let him wrap everything up a week later and become the presumptive nominee.
But former Pennsylvania senator Rick Santorum has swept into the state on the back of wins in Colorado, Minnesota and Missouri. Now he is ahead in all recent Michigan polls.