Even with so little effort, the odds remain overwhelmingly with the amendment supporters. Deseret Morning News/KSL polls conducted by Dan Jones & Associates have consistently shown more than 60 percent of voters will support Amendment 3. Jones said it's possible amendment supporters simply aren't active yet, because they are comfortable with their lead.

Amendment supporters so far have said they'll rely on grass-roots efforts, for the most part, but haven't ruled out possible media buys.

"It's pretty early to rule out any strategies. This campaign will be in earnest in October," Patterson said. "The 'yes' side won't want to be blindsided."

Ruzicka says voters will be hearing from all four campaigns, as volunteers make phone calls to friends and family, and go door-to-door in their own neighborhoods with fliers.

Anne Wood, spokeswoman for the recently formed Utahns for a Better Tomorrow, said her group will serve as an umbrella organization for those supporting the amendment. Wood said all four groups will start their organized campaign efforts with an Oct. 5 launch.

"Cohesiveness is our ultimate mission," Wood said. "Everyone comes together."

McCoy said he expects and is ready for an organized statewide effort on the pro-amendment side.

"I'm taking them at their word, they'll run a full statewide campaign," he said. "We fully expect the last month to be full, head-on battle month. . . . We'll be getting out our message, they'll do the same. We'll see what happens Nov. 2."

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E-mail: dbulkeley@desnews.com