Photo: Vice presidential debate: Tim Kaine and Mike Pence

la-na-pol-vice-presidential-debate-mike-pence-025  (Saul Loeb / AFP / Getty Images )

Democratic vice presidential candidate Tim Kaine and Republican vice presidential candidate Mike Pence during the debate.  (Paul J, Richards / AFP/Getty Images)

Donald Trump’s running mate, Mike Pence, speaks during the vice presidential debate at Longwood University in Farmville, Va.

Democrat Tim Kaine answers a question as Republican Mike Pence listens during the vice presidential debate at Longwood University in Farmville, Va.

Democratic vice presidential nominee Tim Kaine and Republican vice presidential nominee Mike Pence shake hands before their debate at Longwood University in Farmville, Va.

Republican nominee Mike Pence (left) and Democratic nominee Tim Kaine listen as moderator Elaine Quijano speaks during the vice presidential debate at Longwood University in Farmville, Va.

la-na-pol-vice-presidential-debate-mike-pence-017  (Mark Wilson / Getty Images )

Sen. Tim Kaine of Virginia, left, and Indiana Gov. Mike Pence arrive for the vice presidential debate at Longwood University in Farmville, Va.

CBS News correspondent Elaine Quijano surveys the venue before moderating the vice presidential debate at Longwood University in Farmville, Va.

Tim Kaine’s wife, Anne Holton (left), greets Mike Pence’s wife, Karen Pence, before their husbands’ debate.

Karen Pence, wife of Republican vice presidential candidate Mike Pence, arrives for the debate at Longwood University in Farmville, Va.

Anne Holton, wife of Democratic vice presidential nominee Tim Kaine, arrives for the debate at Longwood University in Farmville, Va.

The Rev. Jesse Jackson, center, arrives for the vice presidential debate between Democratic nominee Tim Kaine and Republican nominee Mike Pence.

Gov. Terry McAuliffe (D-Va.), facing camera, at the vice presidential debate in Farmville, Va.

Reince Priebus, chairman of the Republican National Committee, talks with CNN commentator Donna Brazile before the vice presidential debate between Democrat Tim Kaine and Republican Mike Pence.

A member of the Secret Service stands guard near the stage before the vice presidential debate between Mike Pence and Tim Kaine at Longwood University in Farmville, Va.

A worker vacuums in preparation for the vice presidential debate between Democratic nominee Tim Kaine and Republican nominee Mike Pence at Longwood University in Farmville, Va.

Last-minute preparations are made inside Willett Hall before the 2016 vice presidential debate at Longwood University.

The stage at Longwood University’s Willett Hall is prepared for the vice presidential debate.

Members of the media wait in the spin room before the vice presidential debate at Longwood University in Farmville, Va.

Recent poll numbers are displayed on a TelePrompTer inside Willett Hall before the vice presidential debate at Longwood University in Farmville, Va.

The stage is set for the vice presidential debate at Longwood University in Farmville, Va.