The margin of victory just keeps getting smaller and smaller, proving that each vote for an artist in the Taste of Country Showdown is extremely valuable. Thompson Square's 'Glass' is the new champion this week, having surged late to top Ronnie Dunn's 'Let the Cowboy Rock.' Dunn had won twice in a row, but couldn't hold off the married country duo, losing by just over two percent.

'Glass' is picking up fans for the band each time it's played on the radio and every time the video is aired on country music video networks. The delicate ballad tells how fragile love can be. One can't help but wonder if Keifer and Shawna Thompson's personal story of romance was recalled during their stirring performance of the song.

The contender this week is Keith Urban and his song 'For You' from the 'Act of Valor' soundtrack. It's another ballad, one about what one will do for his or her loved ones. The video for the song features images from the movie, which opened nationwide last weekend.

Listen to both songs and then decide which you like better. You can vote once, but be sure to tell all the Thompson Square or Keith Urban-loving people in your life to log on and vote as well. Each vote is critical. The deadline is next Sunday (March 4) at 11:59PM ET.

Watch Thompson Square's 'Glass' Video

Watch Keith Urban's 'For You' Video

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Showdown Rules: The artist and song with the most votes wins, and winner goes on to face next week’s challenger. If an artist wins four weeks in a row, he or she will be retired into the Taste of Country Showdown Hall of Fame to allow for new songs to compete.