Vocal Group of the Year at the ACM Awards is a category with some fierce competition. Four-time winners Little Big Town are back in the running this year, along with repeat champs Lady Antebellum, but 2018 brings a whole new collection of up-and-coming groups to the lineup, including Old Dominion, who are back on the list alongside some new faces.

Lady A have won this category three times so far, including last year, and with the success of their latest album, Heart Breakthey've got a good chance of taking home the trophy again -- that is, if they can outdo newcomers Lanco, who are also nominated for New Vocal Group or Duo of the Year and are making a big splash with "Greatest Love Story" and other rising hits.

Little Big Town are nominated for Album of the Year and Single Record of the Year for their hit "Better Man," off their album The Breakerso it's no wonder that they're nominated in this category as well, vying for their fifth category win. They're up against newbies Midland, who have nominations in New Vocal Group or Duo and Single Record of the Year for their song "Drinking Problem," as well.

Lastly, there's Old Dominion, who earned their third consecutive nomination in this category. With their hit-packed album Happy Endings, maybe they'll have a "happy ending" of their own at the ACMs this year.

Who deserves Vocal Group of the Year at the 2018 ACM Awards? Vote for your pick in the poll below; you can vote as often as once per hour through the end of the day on Thursday, April 12. The Boot's staff will tally the votes and use them for our readers vs. staff predictions before the show.

The 2018 ACM Awards are set to take place in Las Vegas, Nev., on April 15, and air live on CBS beginning at 8PM ET. The ceremony will take place at the MGM Grand Garden Arena.

The Boot will be staying up late covering the most buzzed-about winners, fashion and moments at the 2018 ACM Awards. Readers can watch along with us by checking back to TheBoot.com for the latest ACMs headlines, liking The Boot on Facebook and following The Boot on Twitter.

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