U.S. District Judge Raymond P. Moore said Tuesday he'll rule Wednesday in a case challenging Colorado's ban on gay marriage.

Moore said he was leaning toward ruling in favor of plaintiffs but was uncertain whether his ruling should be put on hold.

Democratic Governor John Hickenlooper and Republican Attorney General John Suthers asked Moore to declare invalid the state's ban but delay implementation until the Supreme Court has ruled in a separate but similar case.

The Tenth Circuit Court of Appeals in Denver last month upheld a lower court's ruling striking down Utah's restrictive marriage ban. The ruling has reverberated in Colorado, where three county clerks cited the ruling in announcing they would begin issuing marriage licenses to gay couples.

(Related: Colorado county reluctantly stops issuing marriage licenses to gay couples.)

Plaintiffs challenging the ban – six gay and lesbian couples – filed their challenge after the appeals court handed down its decision.

Since that date, the Tenth Circuit has issued a second ruling striking down a state ban. This time it was Oklahoma, leaving little doubt Colorado would lose an appeal.

Hickenlooper, who recently endorsed marriage equality, in 2013 signed Colorado's civil unions law.