SAN FRANCISCO (AP) - The two men hoping to be California's next governor are preparing to meet for what's likely to be their only one-on-one debate.

Republican John Cox and Democrat Gavin Newsom will debate Monday morning at San Francisco public radio station KQED. The hour-long session will not be televised but will be offered to radio stations to broadcast around the state.

The debate will be a crucial opportunity for Cox to get his message out or try to trip up Newsom. He has trailed Newsom in polls and fundraising. The impact from a radio-only daytime debate could be limited, though.

Cox is a lawyer, accountant and investor from the San Diego area who has never held elected office. Newsom is California's lieutenant governor and former San Francisco mayor.