Project Vote Smart, a voter education nonprofit group, is poised to remove Sen. John McCain from its board of directors because the Arizona Republican has not responded to a political survey it sends to presidential candidates, according to an article in Mother Jones, a liberal magazine.

The bipartisan organization, in Philipsburg, Mont., asks all candidates for presidential, congressional, gubernatorial, and state legislative offices to answer its Political Courage Test, which asks questions about taxes, the federal budget, and other policy issues.

Neither of the Democratic presidential candidates, Sen. Hillary Clinton and Sen. Barack Obama, have answered the survey, reports the magazine.

In Mr. McCain’s case, Mother Jones reports that Vote Smart’s executive committee voted in February to remove the senator from the board if he doesn’t respond by today. The senator was a founding board member of the organization and has answered the survey previously.

The magazine writes that Mr. McCain’s campaign did not respond to a request for comment.