The Czech Republic’s billionaire prime minister fortified his support among potential voters, defying escalating tensions over a police investigation into whether he committed fraud. The ANO party led by Andrej Babiš widened its lead in a survey conducted by pollster STEM last month when new allegations related to the fraud probe led to a failed no-confidence motion in parliament. ANO’s backing rose to 36% in November, from 33% in the previous month.