WARSAW, Poland (AP) — Poles are voting in local runoff elections to choose the mayors of several key cities, including Krakow and Gdansk, and more than 640 other towns and smaller localities.

A first round on Oct. 21 saw the ruling populist Law and Justice party strengthen its showing in regional assemblies but lose mayoral races outright in Warsaw, Poznan and Lodz to a centrist pro-European Union coalition led by the Civic Platform party.

The results so far highlight the deep divisions between Poland's cities, which have many liberal voters, and a rural heartland largely supportive of the conservative ruling party despite its conflicts with the EU and accusations that it is taking an authoritarian direction.

The centrist opposition is favored to win in Krakow and Gdansk in Sunday's voting, which is taking place in 649 municipalities.