At the ACM Awards, Song of the Year is awarded to the songwriters, publishers and artists behind the hits. Chris Stapleton's "Nobody to Blame" (2016), Miranda Lambert's "Automatic" (2015), Lee Brice's "I Drive Your Truck" (2014) and "Over You" from Lambert and Blake Shelton (2013) have all won the honor in recent years. In 2017, Lambert and Stapleton are nominated again, along with Keith Urban, Thomas RhettTim McGraw and Eric Church. The competition is tight!

When Urban released “Blue Ain’t Your Color,” the fourth single from Ripcord, there was pressure: His five previous songs had all hit No. 1. The song lived up to expectations and topped Billboard's country charts for 12 weeks, and went to No. 24 on the all-genre Hot 100. "Blue Ain't Your Color" was also nominated for two awards at the 2017 Grammys; Clint Lagerberg, Hillary Lindsey and Steven Lee Olsen wrote the track.

Rhett's “Die a Happy Man,” written by the singer, Sean Douglas and Joe Spargur, is the second single from Tangled Up. Rhett wrote the mellow love song about his (now-expecting) wife Lauren, and it melted the hearts of fans everywhere. The song topped the country charts, and stayed steady at No. 1 on the Country Airplay chart for six weeks; that hasn't happened since Taylor Swift's "Our Song," in late 2007. "Die a Happy Man" has a double-platinum certification; it's won numerous awards, including the CMA's Single of the Year trophy.

Lori McKenna wrote a letter to her children, put it to music, called it “Humble and Kind” and helped McGraw earn a huge hit. The song won Song of the Year at the 2017 Grammys, and is nominated for three ACMs in 2017. The No. 1 song is certified platinum and is also on McKenna's Grammy Awards-nominated The Bird and the Rifle.

“Kill a Word,” from Church, features Rhiannon Giddens and was written by Church, Luke Dick and Jeff Hyde. It's a track off Mr. Misunderstood, Church's fifth studio album; the artist calls "Kill a Word" "relevant" and "timely." The song peaked at No. 10 on Billboard's Hot Country Songs chart and at No. 8 on the Country Airplay chart.

The words "Tennessee Whiskey" may give modern country music fans flashbacks to Stapleton and Justin Timberlake at the 2015 CMA Awards, but the song, written by Dean Dillon and Linda Hargrove, was originally recorded by David Allen Coe, and then George Jones. Stapleton's version -- the version nominated at the 2017 ACM Awards -- comes from his debut album, Traveller; it became a No. 1 country hit in the days after the 2015 CMAs, and it peaked at No. 20 on the all-genre Billboard Hot 100; it's also been certified platinum.

Lambert's sixth studio album, The Weight of These Wings, includes the lead single “Vice,” written by the singer, Shane McAnally and Josh Osborne. The song earned three ACM nods this year, and received two Grammys nominations, too. "Vice" debuted at No. 2 on Billboard's Hot Country Songs chart and No. 18 on the Country Airplay chart.

Who should win Song of the Year at the 2017 ACM Awards? Vote for your pick in the poll below as often as once an hour until 11:59PM ET on March 30. We’ll compile the results for our readers vs. staff predictions prior to this year's ACMs.

The 2017 ACM Awards are set to take place in Las Vegas, Nev., on April 2, and air live on CBS beginning at 8PM ET. For the first time ever, the show will take place at T-Mobile Arena; Luke Bryan and Dierks Bentley will return as co-hosts.

The Boot will be staying up late covering the most buzzed-about winners, fashion and moments at the 2017 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.

Country Artists React to the 2017 ACM Awards Nominations

How Well Do You Know the ACM Awards?