ATLANTA (AP) — Herman Cain suspended his faltering bid for the Republican presidential nomination Saturday, throwing his staunchly conservative supporters up for grabs with just one month to go before the lead-off caucuses in Iowa.Still sounding defiant, Cain denounced the drumbeat of sexual misconduct allegations against him as “false and unproven” but said they had been hurtful to his family, particularly his wife, Gloria, and were drowning out his ability to deliver his message.“So as of today, with a lot of prayer and soul-searching, I am suspending my presidential campaign because of the continued distractions and the continued hurt caused on me and my family,” a tired-looking Cain told about a 400 supporters. His wife stood behind him on the stage, drawing chants of “Gloria!” from the crowd.Cain’s announcement provides a new twist in what has already been a volatile Republican race. Former House Speaker Newt Gingrich has, so far, been the biggest beneficiary of Cain’s precipitous slide.