Roughly 4,000 people attended Spartanburg, South Carolina's sixth annual Gay Pride parade.

The event, titled Upstate Pride March and Festival, was held Saturday in downtown Spartanburg, CBS affiliate WSPA reported.

“More people are being supportive, which I think will in turn help open the way to getting equality in this area,” said supporter Carrie Weimer.

Many festival-goers signed a petition asking South Carolina Attorney General Alan Wilson to stop defending in court the state's constitutional amendment limiting marriage to heterosexual couples.

A federal appeals court decision striking down a similar ban in Virginia could affect the Palmetto State, as both states are under the jurisdiction of the same circuit court.

The challenge could be heading to the U.S Supreme Court.

(Related: Supreme Court will consider hearing 5 cases challenging state gay marriage bans.)

Keith Keppley, president of Upstate Pride SC, said fewer protesters showed up at this year's event.