Former Olympic champion Sergey Bubka thinks the fight against doping is the main task facing whoever triumphs in Wednesday¡¯s IAAF presidential election, a vote he is still confident he will win.

Flanked by fellow Ukrainian sporting greats in soccer player Andriy Shevchenko and boxer Vitali Klitschko, Bubka defended his sport¡¯s record in the battle against drug cheats but said clearly more needed to be done.

Bubka will take on another former great of the sport in Britain¡¯s Sebastian Coe in Wednesday¡¯s ballot, which has been overshadowed by allegations of wholesale doping in athletics over the last three weeks.