Will the 2009 ACM Entertainer of the Year be Kenny Chesney, George Strait, Carrie Underwood, Keith Urban or Brad Paisley? That's up to you.

The Academy of Country Music announced that starting today, March 16, fans can vote for Entertainer nominees by logging onto www.voteACM.com. Voting runs through the last hour of the show, which airs live on CBS, April 5 at 8 PM ET.

Chesney is the reigning Entertainer of the Year, taking home the coveted honor the last four years in a row. If he wins again this year, he'll tie Alabama for the most consecutive ACM Entertainer wins.

Paisley and Strait lead in overall ACM nominations, with six nods apiece. Urban has three nods, and Underwood has four, including her very first Entertainer nomination. If she were to win, she'd be only the seventh female to win the award, joining Loretta Lynn (1975), Dolly Parton (1977), Barbara Mandrell (1980), Reba McEntire (1994), Shania Twain (1999) and the Dixie Chicks (2000).