A gay teen is calling on President Barack Obama and Mitt Romney to wear purple next Friday in support of Spirit Day.

Katy Butler, the Ann Arbor, Michigan teen who led a protest against the Motion Picture Association of America's (MPAA) decision to give the documentary film Bully an R rating, on Wednesday launched her petition asking for the presidential candidates' support.

Wearing purple on Spirit Day signifies support for troubled gay teens who have been bullied.

“I am asking President Barack Obama and Governor Mitt Romney, who is from my home state of Michigan, to wear purple on October 19th for Spirit Day,” Butler, a Spirit Day ambassador, wrote in her petition.

“If both of these influential men participate by simply wearing purple it will show LGBT teens like me that there are powerful people who care about us. I know what it's like to feel alone, and seeing two of our country's political leaders show that they care about our lives could make a huge difference to LGBT students, who are 3-5 times more likely to experience depression and attempt suicide than their counter parts. Barack Obama and Mitt Romney could take a big step towards ending that feeling of isolation,” she added.

As of Wednesday night, more than 1,700 people had joined the petition.