The Episcopal Diocese of California is to take a stand against an attempt to stop same-sex marriage in the state.

Proposition 8 is an initiative measure on the 2008 California General Election ballot in November.

It would amend the state Constitution to “eliminate right of same-sex couples to marry.”

In May the California Supreme Court overturned a ban on same-sex marriages in the state.

The Right Rev. Marc Handley Andrus, Episcopal Bishop of California, will hold a press conference on Wednesday at San Francisco’s Grace Cathedral.

“The Episcopal (Anglican) Church stands for equal rights for all persons and fair treatment for all Californians,” the church said.

“Andrus will deliver a statement signed by Episcopal bishops throughout the state calling for compassion, love and equal protections for all.”

Bishop Andrus will be joined by the Right Rev. Steven Chaleston, Assisting Bishop of California, the Right Rev. Barry Beisner, Episcopal Bishop of Northern California, other bishops, members of the clergy and lay leaders from throughout California.

Last month Christians, Mormons, Jews, Sikhs and Hindus were asked to join an interfaith alliance hoping to place one million signs in front gardens across the state backing Prop 8.

In May the California Supreme Court overturned a ban on same-sex marriages in the state.

The Court voted 4 to 3 to strike the ban on gay marriage in California, making the state only the second in the US after Massachusetts to allow same-sex couples to marry legally under state law.