Democratic presidential candidate Hillary Rodham Clinton on Thursday called on Houston voters to approve the Houston Equal Rights Ordinance (HERO).

HERO prohibits discrimination in housing, employment and public accommodations based on several characteristics including race, religion, sexual orientation and gender identity.

Opponents of the law forced it onto Tuesday's ballot.

“No one should face discrimination for who they are or who they love – I support efforts for equality in Houston & beyond. #HERO #YesOnProp1 -H,” Clinton tweeted to her more than 4.59 million followers.

The tweet was retweeted or favorited nearly 4,000 times.

The campaign to keep the law has been endorsed in recent days by President Barack Obama, Vice President Joe Biden, Jason Collins, Michael Sam, Sally Field and HUD Secretary Julian Castro.