WASHINGTON (AP) - The Latest on the U.S. presidential race (all times EDT):

1:40 p.m.

Republican vice presidential nominee Mike Pence is visiting a local North Carolina Republican Party office that was damaged by a firebomb.

The Indiana governor is meeting Tuesday with local Orange County Republicans ahead of two rallies elsewhere in North Carolina.

North Carolina has emerged as key battleground and is a must-win state for Republican Donald Trump.

No one was injured in the bombing last weekend. Police are still investigating. Trump and Democrat Hillary Clinton have condemned the attack.

Orange County is a heavily Democratic county at the edge of the Raleigh-Durham metro area. President Barack Obama won 70 percent of the vote there in 2012, though he lost the statewide vote.