A new Marquette Law School Poll in Wisconsin finds Joe Biden and Donald Trump are tied with 50% each in a two-candidate matchup. In a five-way contest including Robert F. Kennedy Jr., Jill Stein and Cornel West, Trump receives 40%, Biden 37%, Kennedy 17% and Stein and West 3% each. Among likely voters Trump receives 51% and Biden 49% in the two-candidate choice.