Clinton led the poll, 46-42, in a head-to-head match with Trump in Wisconsin. When third-party candidates were included, she led by seven points, 44-37, with Johnson at 9 percent and Stein at 3 percent.
The video release on Friday, catching Trump making sexually explicit comments about women, appeared to sway the poll, which was conducted Oct. 6-9. Trump led by one point among likely voters polled on Thursday, but among those who were surveyed on Saturday and Sunday, Clinton had gained a 19-point lead.
The previous Marquette University poll, conducted mid-September, indicated that Trump was catching up to the former Secretary of State in Wisconsin. In that poll, Clinton led by just two points, 44-42, in a two-way race, and by three points, 41-38, with third-party candidates included.
The Marquette University poll was conducted via live telephone interview from Oct. 6-9 among 878 likely Wisconsin voters, with a margin of error of plus or minus 3.9 percent.
TPM's PollTracker Average for the general election in Wisconsin shows Clinton leading Trump, 46.4 to 39.7.