The guest list for Gov. Rick Perry's Aug. 6 day of prayer won't include many of his fellow governors.
Perry had invited all to join him at Houston's Reliant Stadium for what he has labeled a nondenominational, apolitical Christian prayer meeting.
But only Sam Brownback of Kansas has accepted.
The most common excuse is that hardy perennial: schedule conflicts.
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That's the message sent by fellow Tea Party conservatives including Jan Brewer of Arizona, Rick Snyder of Michigan and Paul LePage of Maine.
Indiana Gov. Mitch Daniels will be at the Indiana State Fair.
Utah's Gary Herbert sent his regrets but signed a proclamation supporting the event.
When Perry, chairman of the Republican Governors Association, sent his invitations, he described the importance of the event in biblical terms.
"Given the trials that beset our nation and world, from the global economic downturn to natural disasters, the lingering danger of terrorism and continued debasement of our culture, I believe it is time to convene the leaders from each of our United States in a day of prayer and fasting, like that described in the book of Joel," Perry said.
Several governors have proclaimed days of prayer in their own states this year.
Others say their offices have not yet gotten to August planning.
Mark Jones, a government professor at Rice University, said he is not surprised.
"For a Democrat there is nothing to be gained by attending, and politically it's best for them to quietly decline," he said.
He said that even for Republicans, being associated with an exclusively Christian prayer event could hurt their support among moderates, and attending the event could mar their reputation if a speaker says something scandalous.
But he said he doubts that Perry will have trouble filling the venue, which seats 71,500, with religious supporters.
"The evangelical party is sort of the religious equivalent of unions. It can mobilize," he said.