Atlanta Constitution reports Harris Poll results:

After officially declaring his candidacy, U.S. Senator Fred Thompson moves ahead of former New York City Mayor Rudy Giuliani in the race for the 2008 Republican presidential nomination. One-third (32%) of those who say they will vote in a Republican primary or caucus will vote for Thompson while 28 percent will vote for Giuliani. Much further back is John McCain, who continues his downward slide with 11 percent saying they would vote for the Arizona Senator, and 9 percent who say they would vote for former Massachusetts Governor Mitt Romney.