Republican presidential candidate Ted Cruz has won the endorsements of three additional opponents of LGBT rights.

Ohio conservatives announced Cruz, a Texas senator, their GOP pick in a joint press release issued Monday.

Among those endorsing Cruz were Linda Harvey of Mission America, Phil Burress of Citizens for Community Values and Molly Smith of Cleveland Right to Life.

The release directs supporters to the website of Keep the Promise, a pro-Cruz Super PAC headed by David Barton. Neither the Cruz campaign nor the PAC have promoted the endorsements.

Burress and his group are largely responsible for passage of Ohio's constitutional amendment which defines marriage as a heterosexual union. The Supreme Court in June struck down such bans as unconstitutional.

Harvey is a vocal opponent of LGBT rights.

Last month, Harvey told listeners of her radio program that endorsing LGBT protections is “the least compassionate, the meanest and most hateful thing you can do,” because it will lead to more people thinking it is okay to be LGBT.

The endorsements come after the National Organization for Marriage (NOM), the nation's largest group working to undermine the Supreme Court's marriage ruling, Bob Vander Plaats, an influential conservative leader in Iowa, and James Dobson, founder of the Christian conservative Focus on the Family, endorsed Cruz for president.