KIEV, April 1. /TASS/. The National Public Broadcasting Company of Ukraine (UA:PBC) has invited incumbent Ukrainian President Pyotr Poroshenko and presidential candidate Vladimir Zelensky, who made it to the runoff stage of the Ukrainian election, to take part in televised debates, a message by the UA:PBC website informs.

"The National Public Broadcasting Company of Ukraine invites presidential candidates who made it to the runoff stage to take part in the debates," the message notes.

So far, it is not obligatory for the presidential candidates to participate in the debates, however, on March 20, the Ukrainian parliament introduced a bill on the changes to the electoral law, which deems the debates between the runoff candidates obligatory.

The first round of Ukraine’s presidential election was held on Sunday, March 31. The country's Central Election Commission earlier said that none of the candidates had been able to secure the majority of votes in the first round. The runoff is scheduled for April 21.

Most experts say head of the Servant of the People party Vladimir Zelensky and incumbent head of state Pyotr Poroshenko will contest the presidency.