“We assume the race will tighten, and as that happens, the size of the shy Trump vote could very easily come into play,” said Neil Newhouse.

In post-election polling, when he asked people if they had ever been unwilling to talk about their vote, 35 percent of Trump voters said yes. And they tended to be women from Democratic-leaning counties.

Read more about the intrigue of the ‘shy voter’ here.