As many as 40.82 percent of respondents to a June survey on Poles' electoral preferences declared they would vote for the incumbent, President Andrzej Duda, according to results of a recent survey conducted by Pollster Institute for the Super Express tabloid. Duda's main rival, the Civic Coalition (KO)'s Rafal Trzaskowski, would be backed by 30.28 percent of respondents, the poll said.