Croatian voters are casting their votes on Wednesday in parliamentary elections marked by a bitter rivalry between President Zoran Milanović, a Social Democrat friendly towards Moscow, and conservative Prime Minister Andrej Plenković. The latest polls put Plenković’s long-ruling conservative Croatian Democratic Union (HDZ) ahead of the opposition Social Democratic Party of Croatia (SDP). Milanović made a surprise announcement a month before the elections that he would seek the post of prime minister as the head of the SDP. As president, he has made right-wing populist and pro-Kremlin remarks. …