Gov. Scott Walker continues to be less popular in Wisconsin than President Barack Obama.

The Marquette University Law School poll released Wednesday shows Walker’s approval rating at 44 percent. Obama’s is 52 percent.

Walker’s approval rating is essentially unchanged from 43 percent three weeks ago. It was 38 percent in August.

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Trump and Biden hit the now battleground state of Minnesota Walker’s approval rating has been around 40 percent for more than a year. It dropped to its lowest levels as Walker launched his failed presidential bid, and it has not recovered.

The latest Marquette Law School Poll was conducted Oct. 6 through Sunday. It sampled 1,000 registered voters and the margin of error is plus or minus 3.7 percentage points.

The poll also found:

The U.S. Senate race has tightened to its narrowest lead to date, with former Democratic Sen. Russ Feingold over incumbent Republican Sen. Ron Johnson. Feingold led Johnson 46-44 among likely voters. Libertarian candidate Phil Anderson received 4 percent support.

Hillary Clinton widened her lead to seven points over Donald Trump in Wisconsin.

The latest poll showed Clinton leading Trump 44-37 among likely voters. Libertarian candidate Gary Johnson received 9 percent support and Green Party candidate Jill Stein received 3 percent.

The release of a video showing Donald Trump making crude comments about women is causing wide swings in public opinion about the race. The Clinton-versus-Trump results fluctuated from Thursday, before a recording of Trump making lewd and predatory comments about women surfaced, to Saturday and Sunday. Among the 412 likely voters polled on Thursday, Trump led 41-40, but among the 236 likely voters polled Saturday and Sunday, Clinton led 49-30. Among the 230 polled on Friday as the Trump video surfaced, Clinton led 44-38. The previous Marquette poll, conducted a week before the first presidential debate, showed Clinton holding a three-point edge over Trump among likely Wisconsin voters, 41-38.

Wisconsin voters have a better impression of Trump’s running mate, Mike Pence, than Hillary Clinton’s vice presidential pick, Tim Kaine, 37 percent to 26 percent. More than a third of people polled don’t have an opinion of either of them.

This report includes information from the Associated Press.