MADISON, Wis. (AP) — Gov. Scott Walker's approval rating remains below 40 percent.

A Marquette University Law School poll released Wednesday shows Walker's approval at 38 percent, unchanged from July. It was at 43 percent in March just before Wisconsin's presidential primary.

Walker's approval rating first fell below 40 percent nearly a year ago, just before he dropped out of the Republican race for president.

Walker has largely focused on state politics since dropping out of the race, but he returned to the national spotlight earlier this month with a prime-time speech at the Republican National Convention endorsing Donald Trump.

The Marquette Law School Poll was conducted Aug. 4 through Sunday, sampling 805 registered Wisconsin voters. It has a margin of error of plus or minus 4.6 points.