Clinton led Trump 41 percent to 32 percent in the statewide survey of 600 likely voters conducted Saturday through Monday following Clinton’s formal nomination at last week’s Democratic National Convention.

The poll contains many troubling signs for Trump’s White House campaign, including a “shocking” lead for Clinton in the Republican strongholds of west and southwest Michigan, pollster Richard Czuba said.

Sixty-one percent of likely general election voters said Trump is ill-prepared to be the nation’s commander-in-chief. The figure grows to 67 percent among women, a group with whom Trump performs poorly. Clinton has a commanding 21-percentage-point lead among female voters.

“He’s sitting in the cellar right now, and they’re going to have to do something to dramatically turn this around,” said Czuba, president of the Glengariff Group Inc. polling firm. “If I were a Republican running on this ticket right now, I’d be beyond nervous.”