Illinois conservatives defeated a campaign by gay activists to push through a same-sex marriage bill last week.
The Illinois Senate approved the measure in February, but the state House adjourned its session Friday without voting on it despite months of fierce campaigning on the issue.
President Obama even jumped in at the last minute, urging Illinois lawmakers to approve gay marriage.
Gay activists thought momentum was in their favor after several other states recently approved it.
But conservative black pastors and other church leaders fought back with radio commercials, robocalls, and lobbying. In the end, they prevailed.
Still, gay marriage supporters say they won't give up in Illinois.