Martina McBride has put together a string of four Showdown wins in a row with her new single, and she's going for all the marbles in a new face-off with Blake Shelton today and tomorrow.

McBride's latest, "Reckless," is the first we've heard of a new album she'll release later this year via a new deal with Nash Icon. The autobiographical song reveals a previously hidden wild, spitfire side to the sassy singer, and fans are loving it, turning out to vote for it in one massive upset after another.

Shelton has just released "Came Here to Forget," which is also the lead single from an upcoming album. The superstar has said that the new music will be very personal and draw on his divorce from Miranda Lambert, and fans are sure to read that into the lyrics of the new track. Shelton has as many passionate fans as anyone in country music -- will he be able to break McBride's streak, or is she Hall of Fame bound?

Listen to clips of both McBride’s and Shelton’s songs and vote for your favorite here. You can vote once every hour until this Showdown ends on Friday at 8AM ET, so come back and vote often to be sure your artist wins. The winner of this matchup will face a new challenger on Friday.

Listen to Martina McBride, “Reckless”

Listen to Blake Shelton, “Came Here to Forget”

Showdown Rules: The song with the most votes wins, and the winner goes on to face a new challenger in the next Showdown. Vote as much as once per hour online. If a song wins five Showdowns in a row, it will be retired into the Taste of Country Showdown Hall of Fame to allow for new songs to compete. Some songs will be considered for a second Showdown if voter turnout is healthy in a losing effort.