PHOENIX, Ariz. – At 6:30 p.m. yesterday, Dr. Bruce Merrill told a meeting sponsored by the Society of Professional Journalists that polls are “the most misused, most misunderstood tool in journalism and politics.”
At 7 p.m., a new Merrill-directed Cronkite/Eight Poll was officially relased and revealed Republican John McCain’s 7 percent lead in Arizona over Democratic rival Barack Obama. Home state support for McCain was down 3 percent from a similar August poll.
In his speech to the SPJ-sponsored audience, Merrill explained sampling error and statistical equations and listed the reasons why polls cannot be used to determine who will win a presidential election. At the top of the list was a poll’s representation of a snapshot in time.
Merrill’s poll, co-directed by Dr. Tara Blanc, was conducted over the weekend. After Monday’s events on Wall Street, Merrill believes that the same poll taken yesterday would show a dead heat between McCain and Obama, within the margin of error.
“There’s no question that the breakdown of the economy is going to help Obama a lot, because the Republicans have been in office for the last seven years. Polling data supports the idea that people blame the Republicans much more than the Democrats for the financial crisis,” he said.
Sampling error, the undecided vote, and turnout also contribute to a poll’s inability to predict the next president. According to Merrill, voter turnout should play the largest role in 2008. If the 18 to 29-year-olds cast their ballots, Obama will win by a landslide. On the other side, McCain may see a surge of voters from the religious right that could tip the scale in his favor.
“Presidential elections are decided by turnout and there’s not a pollster in the world who can predict who’s going to go to the polls. I think it’s just crazy to try and predict that.”
The poll, which was also released overseas, surveyed 976 registered Arizona voters and also found significant polarization on both sides of the vote. Numbers show that the state is divided on Sarah Palin’s ability to assume the role of president in the event that something should happen to McCain. Obama’s strengths continue to be seen as the need for change and social issues, while McCain holds the advantage in experience and military background.
Merrill was the pollster for McCain’s first congressional race in 1982 when the current presidential hopeful earned a seat in the U.S. House of Representatives. A veteran in the polling industry, Merrill serves as Professor Emeritus at the Walter Cronkite School of Mass Communication where he established the media research program in the late 1980s.