The action, decided at a board meeting April 10 and scheduled to be announced in coming weeks, protests a $1 million buy on conservative talk show host Rush Limbaugh's syndicated radio program.
The buy is part of a $17.1 million campaign from Saatchi & Saatchi Advertising, New York, that began in February.
NOW is talking with other national groups to broaden support for the boycott. Paid ads, both print and broadcast, may be used to announce the expanded version of boycotts begun last month by several local NOW chapters.
"We're considering a number of options, from picketing to a letter writing campaign to guerrilla theater," said Patricia Ireland, NOW president. "We support free speech but we don't support the use of public monies to promote the dangerous, hate-filled thinking Mr. Limbaugh represents."
Separately, a Florida resident has filed suit in Manatee County Circuit Court in Bradenton to stop the state from spending money on Mr. Limbaugh's show.
The commission stands by its advertising, a spokesman said.
Said Stuart Krane, a partner with EFM Media, New York, which produces and syndicates Mr. Limbaugh's show: "I'd like NOW ... or anyone else to show where he has engendered hate."