ST. PAUL, MN - SEPTEMBER 03:  Former New York City Mayor Rudy Giuliani laughs on day three of the Republican National Convention (RNC) at the Xcel Energy Center on September 3, 2008 in St. Paul, Minnesota. The GOP will nominate U.S. Sen. John McCain (R-AZ) as the Republican choice for U.S. President on the last day of the convention. Getty Images logo Getty Images 10 months ago

ST. PAUL, MN - SEPTEMBER 03: Former New York City Mayor Rudy Giuliani laughs on day three of the Republican National Convention (RNC) at the Xcel Energy Center on September 3, 2008 in St. Paul, Minnesota. The GOP will nominate U.S. Sen. John McCain (R-AZ) as the Republican choice for U.S. President on the last day of the convention.