Exiled former Haitian President Jean-Bertrand Aristide was due to fly back into his country overnight after ignoring United States opposition to a homecoming some fear could disrupt Haiti's presidential election runoff tomorrow.

Former Catholic priest Aristide, 57, who lived in South Africa after his 2004 ouster that he says Washington helped engineer, had insisted on returning home just before the decisive presidential contest between former first lady and law professor Mirlande Manigat against entertainer and music star Michel Martelly.