Both the Marquette University Law School and the University of Wisconsin-Madison Elections Research Center polls showed Mr. Trump moving within the margin of error in September, with just a 4-point lead for Mr. Biden among likely voters. That’s the tightest Marquette result since May and a 4-point improvement for the president in the University of Wisconsin poll since August — a period in which he also narrowed Mr. Biden’s lead among independents in the UW poll.
University Communications