Gay marriage opponents have high hopes for a California Supreme Court decision expected next week.

The court says it will announce its ruling on Proposition 8 Tuesday, May 26.  The measure won 52 percent of the vote in November, defining marriage in California as strictly between one man and one woman.

Earlier this year, the court heard arguments from gay rights groups who say Prop 8 illegally revised the state constitution to end same-sex marriage.

Still, attorneys supporting Prop 8 told CBN News they are "cautiously optimistic" about the upcoming ruling.

"Given the arguments put forth by the attorneys and the indications put forth by the court at oral arguments, the court seemed to indicate that the position put forth by the challengers of Prop 8 was a radical legal position they were not going to adopt," said Jim Campbell, Litigation Counsel of the Alliance Defense Fund.

The legality of thousands of gay marriages performed in California before last November's vote are also in question.