The 2014 ACM Awards are right around the corner, and some of country's biggest stars are up for Vocal Event of the Year.

Tim McGraw is nominated for 'Highway Don't Care,' which featured appearances by Taylor Swift and Keith Urban. Blake Shelton scored a nomination for 'Boys 'Round Here,' which featured Pistol Annies and more of his famous friends.

Florida Georgia Line are nominated for their mega-hit remix of 'Cruise,' on which rapper Nelly made a guest appearance. Darius Rucker invited Lady Antebellum to add their harmonies to his huge hit, 'Wagon Wheel,' scoring a nomination, and Urban and Miranda Lambert's collaboration on 'We Were Us' also got the nod.

Which of these collaborations deserves to win Vocal Event of the Year at the 2014 ACM Awards? Vote as often as once an hour in the poll below, and we'll tabulate the results for our ACM Awards predictions the week before the show!

Blake Shelton and Luke Bryan will return to host this year’s awards ceremony, which will air live from the MGM Grand Garden Arena in Las Vegas Sunday, April 6 at 8PM ET on CBS. See a complete list of nominees here.