America's votes will decide what acts advance to the Top 10, and which winner is ultimately crowned, receiving a $1 million prize, in addition to their own Las Vegas show.
Voting is open to all persons in the United States, District of Columbia and Puerto Rico. There is a limit of 10 votes per originating phone number or 10 votes per e-mail.
Here's how to cast your vote:
Internet voting is open to those age 13 and older between 8:55 p.m. today and 4 a.m. Wednesday, central time, at www.nbc.com/Americas_Got_Talent/vote. You must register.
Toll-free voting by phone opens five minutes before the end of the show and closes two hours after the end of the show (subject to broadcast times and time zones.) The numbers will be shown at the end of the show.