(Yahoo!) - History may be made in several categories at the 46th annual Country Music Assn. Awards on Thursday. Kenny Chesney is vying for a record-setting fifth award as Entertainer of the Year. Chesney is currently tied for the lead with Garth Brooks, who took Entertainer of the Year four times between 1991 and 1998.

But to win, Chesney will have to get past the reigning champ, Taylor Swift. Swift, who also won in this category in 2009, is vying to become the first woman to take Entertainer of the Year three times. She would surpass Barbara Mandrell, who won twice in 1980-1981.

Eric Church's "Springsteen," which topped Billboard's Hot Country Songs chart for two weeks in June, is nominated for Single of the Year, Song of the Year and Music Video of the Year. It's the year's only work to receive nominations in all three categories. It's vying to become only the third hit in CMA history to sweep all three awards. The first two were Alan Jackson's "Chattahoochee" in 1993-1994 and Brooks & Dunn's"Believe" in 2006.

Martina McBride is vying to become the first five-time winner for Female Vocalist of the Year. She previously won in 1999 and from every year from 2002-2004. This would enable her to break out of a tie with Reba McEntire, who won the award four years in a row from 1984-1987.

Miranda Lambert and Blake Shelton are vying to win as Female Vocalist of the Year and Male Vocalist of the Year, respectively, for the third straight year. The two were married on May 14, 2011. Only one other married couple has won these awards in the same year—Faith Hill and Tim McGraw, the winners in 2000.

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