But Haley’s surge is revealing of a broader problem for Trump—one that could potentially derail the former president in the general election should he defeat her in the primary.

Women, including Republican women, still just don’t like the former president.

A recent survey of likely voters in New Hampshire distills the extent of the challenge for Trump. The poll, conducted by American Research Group, showed Trump beating Haley overall among GOP primary voters, 37 percent to 33 percent.

But among Republican women, Haley was running ahead of Trump by 6 points.