In Ohio's governor race, Republican Vivek Ramaswamy and Democrat Amy Acton have announced their running mates.

Biden and his leading supporters are stepping up warnings to Democrats to avoid becoming complacent. If the election were held today, I think Biden would win Michigan, said Michigan Rep. Debbie Dingell. Four years ago, Hillary Clinton was leading by wide margins nationally and in Michigan, Wisconsin and Pennsylvania -- the very states that ultimately put Trump over the top. Still, in Biden, Trump faces an opponent with a stronger standing among some groups of voters, especially independents, than Clinton had. While Trump animates the left, Dingell warned that Democrats havent closed the deal with alienated moderates and can unwittingly help Trump expand his white base.