The most common disruptions at precincts are late openings, lack of staffing and voting machine issues, according to Jeff Greenburg, a 13-year election director veteran. He is now a senior advisor on election administration for The Committee of Seventy, a nonpartisan organization focusing on engagement and public policy advocacy.

Polls open at 7 a.m. and close at 8 p.m. If you are in line to vote at 8 p.m. you still will be allowed to cast your ballot.  Sign-up for Your Vote: Text with the USA TODAY elections team. It is not necessary in Pennsylvania to show identification to vote unless it is your first time voting at a new polling location.

Pennsylvania voters are almost sure to play a pivotal role in the Nov. 5 general election, with control of the White House and both chambers of Congress and the state Legislature in the balance. With its 19 electoral votes,