Voting has begun for the Academy of Country Music Awards' coveted Entertainer of the Year trophy. For the first time ever, fans will choose the winner by casting their votes online. This year's nominees are George Strait, Rascal Flatts, Keith Urban, Kenny Chesney and Brad Paisley. Chesney has taken home the honor the past three years in a row. He also leads the pack in ACM nominations this year, with seven nods.

The ACM Awards will broadcast live from Las Vegas on Sunday, May 18. Cast your vote for Entertainer of the Year by visiting www.voteacm.com, and see the full list of ACM nominees after the jump.

Entertainer of the Year

Kenny Chesney

Brad Paisley

Rascal Flatts

George Strait

Keith Urban

Top Male Vocalist

Rodney Atkins

Kenny Chesney

Brad Paisley

George Strait

Keith Urban

Top Female Vocalist

Miranda Lambert

Martina McBride

LeAnn Rimes

Taylor Swift

Carrie Underwood

Top Vocal Group

Diamond Rio

Eagles

Emerson Drive

Little Big Town

Rascal Flatts

Top Vocal Duo

Big & Rich

Brooks & Dunn

Halfway to Hazard

Montgomery Gentry

Sugarland

Top New Male Vocalist

Luke Bryan

Jack Ingram

Jake Owen

Top New Female Vocalist

Sarah Buxton

Kellie Pickler

Taylor Swift

Top New Duo or Vocal Group

Carolina Rain

Lady Antebellum

The Wreckers

Album of the Year

'5th Gear,' Brad Paisley

Producer: Frank Rogers

'Crazy Ex-Girlfriend,' Miranda Lambert

Producers: Frank Liddell, Mike Wrucke

'Just Who I Am: Poets & Pirates,' Kenny Chesney

Producers: Buddy Cannon, Kenny Chesney

'If You're Going Through Hell,' Rodney Atkins

Producers: Rodney Atkins, Ted Hewitt

'Taylor Swift,' Taylor Swift

Producers: Scott Borchetta, Nathan Chapman, Robert Ellis Orrall

Single Record of the Year

'Don't Blink,' Kenny Chesney

Producers: Buddy Cannon, Kenny Chesney

'Famous in a Small Town,' Miranda Lambert

Producers: Frank Liddell, Mike Wrucke

'Lost in This Moment,' Big & Rich

Producers: Big Kenny, John Rich

'Stay,' Sugarland

Producers: Kristian Bush, Byron Gallimore, Jennifer Nettles

'Watching Airplanes,' Gary Allan

Producers: Gary Allan, Mark Wright

Song of the Year

'Don't Blink'

Artist: Kenny Chesney

Writers: Casey Beathard, Chris Wallin

'Lost in This Moment'

Artist: Big & Rich

Writers: Keith Anderson, Rodney Clawson, John Rich

'Moments'

Artist: Emerson Drive

Writers: Dave Berg, Annie Tate, Sam Tate

'Watching You'

Artist: Rodney Atkins

Writers: Rodney Atkins, Steve Dean, Brian White

'Stay'

Artist: Sugarland

Writer: Jennifer Nettles

Video of the Year

'Don't Blink,' Kenny Chesney

Producer: Tacklebox Films

Director: Shaun Silva

'Lost in This Moment,' Big & Rich

Producers: Big Kenny, Steve Lamar, Marc Oswald

Directors: Robert Deaton, George Flanigen

'Online,' Brad Paisley

Producer: Frames Per Second

Director: Jason Alexander

'Stay,' Sugarland

Producers: Kristian Bush, Byron Gallimore, Jennifer Nettles

Director: Shaun Silva

'Watching You,' Rodney Atkins

Producer: Broken Poet Production

Director: Eric Welch

Vocal Event of the Year

'Because of You,' Reba McEntire Duet With Kelly Clarkson

Producers: Tony Brown, Reba McEntire

'Find Out Who Your Friends Are,' Tracy Lawrence with Tim McGraw and Kenny Chesney
Producers: Julian King, Tracy Lawrence

'Shiftwork,' Kenny Chesney Duet with George Strait

Producers: Buddy Cannon, Kenny Chesney

'Till We Ain't Strangers Anymore,' Bon Jovi featuring LeAnn Rimes

Producer: Dann Huff

'What You Give Away,' Vince Gill with Sheryl Crow

Producers: Vince Gill, John Hobbs, Justin Niebank