Johnson has not qualified for any of the presidential debates. He also might have suffered from perceived gaffes in interviews, such as his inability to recognize Aleppo, a war-torn city in Syria, or to name his favorite foreign leader.

A key question is whether a surge in voting for Clinton — or against Trump — will affect Virginia’s congressional races.

An anti-Trump tsunami in Northern Virginia is a concern for Rep. Barbara Comstock, R-10th, who is trying to hold off Democrat LuAnn Bennett in a district that stretches from Fairfax and Loudoun counties, west to Winchester.

Comstock has sought for months to distance herself from Trump. Following release of the tape, Comstock called for Trump to drop out of the race and let Indiana Gov. Mike Pence, Trump’s running mate, serve as the party’s standard bearer.

The CNU survey was conducted Oct. 11-14 among 809 likely voters in Virginia. It has a margin of error of plus or minus 3.6 percentage points.

The poll was in the field after the release of the Trump tape on Oct. 7 and the second presidential debate on Oct. 9. The third and final presidential debate will be at the University of Nevada at Las Vegas on Wednesday.