NASHVILLE, Tenn. (AP) -- Jason Aldean and the Zac Brown Band are the lead nominees for the American Country Awards.

The two rising country music acts received eight nominations apiece, including the second-year award show's top honors, artist of the year and album of the year.

Thompson Square is next with seven nominations apiece for the fan-voted awards. The Band Perry and Taylor Swift each have six. Swift is an artist of the year nominee with Kenny Chesney and Lady Antebellum rounding out the category.

Voting opened Thursday morning at the ACA web site. Fans can vote once a day until Nov. 11 in all categories except artist of the year, which closes Dec. 2.

The show airs live Dec. 5 from the MGM Grand in Las Vegas. Trace Adkins and Kristin Chenoweth host.