Last week, former New York City Mayor Rudy Giuliani and Arizona Senator John McCain both gained support in the race for the GOP nomination. This week, the top four contenders all lost ground. But, through it all, Giuliani remains on top with a double digit lead.The latest Rasmussen Reports national poll shows Giuliani with 28%, thirteen points more than McCain’s total of 15%. Former Tennessee Senator Fred Thompson remains undeclared but in third place with 12% support. Former Massachusetts Governor Mitt Romney remains slightly behind Thompson at 10%. The stability in the GOP competition stands in stark contrast to...