General Electric, BASF, HP and EMC Corporation have joined a growing roster of companies backing passage of the LGBT-inclusive 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. Early voting ended Friday.

According to Houston Unites, the campaign working to keep HERO, nearly 60 companies have endorsed passage of Proposition 1, the ballot initiative that would keep the law in place, including Apple.

“As the world's largest chemical company, BASF is committed to business growth,” BASF said in a statement given to Houston Unites. “We have strong business interests and growth opportunities in Houston and the surrounding area. Our ability to continue to invest and grow here depends on our ability to fully leverage the advantages of a multi-cultural city that offers equal rights for all. BASF supports Proposition 1.”

HERO has also received backing from numerous politicians and celebrities, including President Barack Obama, Vice President Joe Biden, Democratic presidential candidate Hillary Clinton, HUD Secretary Julian Castro, actors Sally Field and Matt Bomer and athlete Michael Sam.