Fans have until April 13 to vote for their favorites at CMT's website. The awards show will be broadcast live April 16 from Nashville's Curb Event Center at Belmont University. For the second straight year, CMT will also simulcast the show live at its website and on CMT Radio.

CMT viewers can also vote for their "Flatt Out Fan Favorite," the Rascal Flatts song that will open the sixth annual awards show.

The final nominees for Video of the Year will be announced at the beginning of the show, and fans can vote at CMT's website or via mobile phone throughout the broadcast to determine the big winner. Underwood, Chesney, Keith, Dixie Chicks, George Strait, Keith Urban, Rascal Flatts and Sugarland are competing for that honor.

This year's CMT Music Awards marks the return of the Dixie Chicks for the first time since singer Natalie Maines' controversial bashing of President Bush at a 2003 concert. Earlier this month, the trio picked up three Grammy Awards: song, record and album of the year.

CMT will debut a new category this year, Wide Open Country, to honor an artist outside of mainstream country music. Jack Ingram, Jimmy Buffett, Johnny Cash and Sheryl Crow/Sting are vying for that trophy.

Country comedian Jeff Foxworthy will return to host the event, which is country music's only fan-voted awards show, according to a press release. Tickets to the shindig go on sale Saturday (3/3).

And the final nominees are:

Video of the Year
Toby Keith, "A Little Too Late"
Carrie Underwood, "Before He Cheats"
Dixie Chicks, "Not Ready to Make Nice"
Keith Urban, "Once in a Lifetime"
George Strait, "The Seashores of Old Mexico"
Sugarland, "Want To"
Rascal Flatts, "What Hurts the Most"
Kenny Chesney, "You Save Me"

Male Video of the Year
Toby Keith, "A Little Too Late"
Tim McGraw, "My Little Girl"
Josh Turner, "Would You Go With Me"
Kenny Chesney, "You Save Me"

Female Video of the Year
Carrie Underwood, "Before He Cheats"
Gretchen Wilson, "California Girls"
Faith Hill, "Stealing Kisses"
Sara Evans, "You'll Always Be My Baby"

Duo Video of the Year
Big & Rich, "8th of November"
Brooks & Dunn, "Building Bridges"
The Wreckers, "Leave the Pieces"
Sugarland, "Want To"

Group Video of the Year
Little Big Town, "Good as Gone"
Rascal Flatts, "Life Is a Highway"
Dixie Chicks, "Not Ready to Make Nice"
Rascal Flatts, "What Hurts the Most"

Breakthrough Video of the Year
Jason Aldean, "Amarillo Sky"
The Wreckers, "Leave the Pieces"
Kellie Pickler, "Red High Heels"
Taylor Swift, "Tim McGraw"

Wide Open Video of the Year
(consisting of videos featured on "CMT Wide Open Country," which showcases alt-country, bluegrass and Americana music)
Sheryl Crow with Sting, "Always on Your Side"
Jimmy Buffett, "Bama Breeze"
Johnny Cash, "God's Gonna Cut You Down"
Jack Ingram, "Love You"

Video with Best Direction
(accepted by the director and artist)
Gary Allan & director Paul Boyd, "Life Ain't Always Beautiful"
Jason Aldean & director Wes Edwards, "Amarillo Sky"
Kenny Chesney & director Shaun Silva, "You Save Me"
Carrie Underwood & director Roman White, "Before He Cheats"