Doyle McManus

Donald Trump's women problem

Donald Trump's women problem

Improbably but relentlessly, Donald Trump is marching toward the Republican Party's presidential nomination. Polls suggest that he may pull off a surprise win in the Iowa caucuses on Monday. He's an even stronger front-runner in New Hampshire and other primary states. And last week, he showed that it's possible to win a debate by not showing up.

But Trump has an Achilles' heel when it comes to winning a general election: He doesn't do well at attracting women voters. Actually, that's an understatement: He repels many of them.

In recent polls of Republican voters in Iowa, the boastful mogul was the first choice of 37 percent of men (when results were averaged) and 31 percent of...