Left, right, or center? See what political parties stars like Britney Spears, Meryl Streep and Beyonce support
Carrie Underwood (Republican)
Though she's a registered Republican, Underwood thinks it's inappropriate for stars to use their fame as a platform to push their personal political beliefs on fans. "I lose all respect for celebrities when they back a candidate," she wrote on her site back in 2008. Still, she's a staunch supporter of marriage equality. "As a married person myself, I don't know what it's like to be told I can't marry somebody I love and want to marry," Underwood, a devout Christian, told the Independent.