Speaking at a press conference, Kosor said that judging by the support she had received at more than 50 election rallies she believed she would enter a runoff.
"This is the best opinion poll showing how I rank with voters," Kosor said.
She cited the results of an internal opinion poll conducted by the HDZ, showing that she would win 31 per cent of the vote.
The HDZ candidate received support from the association of Croatian refugees who returned to their pre-war homes in the Glina area and the association of Bosnian Croat refugees who settled in the area.