Trying to prevent a messy fight for the Democratic nomination , at least three party leaders , State Comptroller Alan G. Hevesi , the party chairman Herman D. Farrell Jr. , and H. Carl McCall , the party 's nominee for governor in 2002 , have urged Mr. Suozzi not to run , and others , like Representative Charles B. Rangel and Mark Green , a former public advocate for New York City , have told Mr. Suozzi that veteran Democratic players like themselves would be firmly behind Mr. Spitzer .