Sure, there's definitely a lack of women in country music. But the females who are making it are certainly a talented bunch, making selecting this year's Female Vocalist of the Year winner at the ACM Awards a very tough call.

Brandy Clark's name may be new to fans as an artist, but she's been making a major impact on country music for years with her stellar songwriting skills. She's responsible for songs like Miranda Lambert's "Mama's Broken Heart" and the Band Perry's "Better Dig Two" and a frequent writer of songs recorded by Sheryl Crow, Reba McEntire, LeAnn Rimes, Darius Rucker, Toby Keith and Kacey Musgraves (to name a few) -- and one of the hottest new solo acts in country today. Clark was nominated for Best New Artist at the 2015 Grammy Awards, proving that she -- along with her debut album 12 Stories -- is one to watch.

Lambert is the reigning champ in this category, which she has won five years in a row (a record for most consecutive wins in the category) and been nominated for nine times. The songstress has a total of eight nods at this years ACM Awards, including Entertainer of the Year, and that comes as no surprise: Her fifth studio album, Platinum, made her the first artist in history to start her career with five No. 1 records and nabbed the 2015 Grammy Award for Best Country Album.

Martina McBride has been in the country music scene the longest of this year's five nominees, so she has experience on her side. After releasing Everlasting, a fantastic album of soul and R&B covers, in April of 2014, she's been touring extensively. McBride also recently signed with Nash Icon Music, which means that new tunes could be on the way soon.

It's been two years since Kacey Musgraves released her debut Same Trailer, Different Park album, but she's continuing to ride it to success, as more and more country fans (and country radio and the industry in general) take notice of her quirky turns of phrase and catchy melodies -- and her willingness to discuss everything from nosy neighbors to same-sex marriage. She recently released a new single, "Biscuits," and is on the road for her 2015 Same Tour, Different Trailer Tour.

Rounding out 2015's Female Vocalist of the Year nominees is new mom Carrie Underwood. She also recently took home a Grammy, for Best Country Solo Performance, and is riding the success of her newest single, "Little Toy Guns," and the No. 1 "Something in the Water," both new songs on her recent Greatest Hits: Decade No. 1 album. And although she'll be doting on baby Isaiah plenty, Underwood has also hinted that new music and a tour could be coming later this year.

Which country lady should take home Female Vocalist of the Year at the 2015 ACM Awards? Vote as often as once an hour in the poll below until the end of the day on April 15. We’ll tabulate the results and use them for our 2015 ACM Awards winners predictions the week before the show.

The 2015 ACM Awards will air live from AT&T Stadium in Arlington, Texas, on April 19 at 8PM ET on CBS.