He added, “In Trump’s America, men work in two places: coal mines and Goldman Sachs.”

Another audience member noted his failures on health care reform, but said he didn’t blame the president for being unable to get the job done.

“You mean Paul Ryan couldn’t,” Mr. Baldwin retorted, referring to the House speaker. “I did everything I could. I made phone calls, I jumped into a truck and I posed for pictures. I went, ‘Honk! Honk!’ But I won’t give up.”

A third supporter said he had a wife who was addicted to painkillers. “It’s Susan Rice,” Mr. Baldwin interjected, talking about President Obama’s national security adviser. “Put her in jail, right?”

Actually, the man answered, his wife was already in a drug rehabilitation program. Mr. Baldwin said he could relate: “My wife doesn’t want to move either, ” he said.

When the supporter explained that the president still had his backing, Mr. Baldwin said, “That’s why I came here. You people stand behind me, no matter what. It’s like you found a finger in your chili, but you still eat the chili, because you told everyone how much you love chili. It’s tremendous.”