Poles vote in elections expected to give President Bronislaw Komorowski a 2nd term

Polish President Bronislaw Komorowski greets supporters during a meeting ending his campaign ahead of a Sunday's presidential election, Warsaw, Poland, Friday, May 8, 2015. Komorowski, who his running for his second term and right wing candidate Andrzej Duda are the main contenders in the upcoming vote. (AP Photo/Alik Keplicz) (The Associated Press)

Polish President Bronislaw Komorowski casts his ballot, as his wife Anna watches in the first round of the presidential election in Warsaw, Poland, Sunday, May 10, 2015. The Poles are voting for president in nationwide balloting that is expected to see incumbent Komorowski, re-elected, but not in the first voting round. (AP Photo/Alik Keplicz) (The Associated Press)

Polish President Bronislaw Komorowski holds his ballot before voting in the first round of the presidential election in Warsaw, Poland, Sunday, May 10, 2015. The Poles are voting for president in nationwide balloting that is expected to see incumbent Komorowski, re-elected, but not in the first voting round. (AP Photo/Alik Keplicz) (The Associated Press)

The Poles are voting for president in nationwide balloting that is expected to see incumbent, Bronislaw Komorowski, re-elected, but not necessarily outright.

Ten other candidates are running in Sunday elections, but none are strong enough to threaten Komorowski's chance for a 2nd, five-year term.

Komorowski, a center-right candidate, has support of some 40 percent of Poles according to recent polls that indicate the election may go to a May 24 runoff, most probably against Andrzej Duda, a new face running for the nationalist opposition Law and Justice party.

The vote is a test for Poland's two major political forces ahead of the parliamentary vote scheduled in the fall. Komorowski is aligned with the ruling Civic Platform party.

Some 30.8 million eligible voters are free to cast ballots until 1900GMT.