People light the candles outside Warsaw's Presidential Palace to commemorate the April 10 2010 aircrash in Smolensk. Photo by EPA/BGNES
Voting has begun in Poland's presidential elections, two months after a plane crash killed President Lech Kaczynski.
The late president's identical twin, Jaroslaw Kaczynski, and acting president Bronislaw Komorowski are among the 10 candidates.
A run-off will be held if no candidate gets more than 50% of the vote.
Kaczynski and 95 others died in the crash in Smolensk in western Russia on 10 April.
The dead included many of Poland's political and military leaders, and the disaster has overshadowed the election campaign, making it one of the least aggressive ever.
The front-runner is the government's candidate, Bronislaw Komorowski, who is a member of the governing Civic Platform party.
The centre-right parliamentary speaker, who is now the acting president, says his whole career proves that he is a man who can unite the nation.
Polls opened at 0600 (0400 GMT) and are set to close at 2000.