Howie Mandel, Mel B, Simon Cowell and Sofia Vergara on the set of "AGT" during the "America's Got Talent" semifinals. “America’s Got Talent” is officially down to a top 10 — and the Season 20 winner will be in the hands of viewers. Here’s a brief overview of the top 10 acts — and how to vote for your favorite. Fans can cast up to 10 votes for each act, through both methods. “AGT” will reveal the Season 20 winner at the end of the two-hour finale on Wednesday night, which airs at 8 p.m. MDT on NBC.