The Song of the Year category is going to present a difficult decision for voters in the 2013 CMA Awards. Some of the biggest, most game-changing songs of the past 12 months are competing against each other this year.

Lee Brice scored big emotional points with 'I Drive Your Truck,' while both Little Big Town's 'Pontoon' and Darius Rucker's 'Wagon Wheel' are fun, light-hearted songs. Kacey Musgraves is in the unusual position of competing against herself; her debut single, 'Merry Go 'Round,' is nominated, and she's a co-writer on Miranda Lambert's 'Mama's Broken Heart,' which is also up for the award.

Which song deserves to take Song of the Year honors this year? Vote below as often as once an hour. We will tabulate the results and use them for our CMA Awards winners predictions the week before the show.