Ex-premier of Ukraine Yulia Tymoshenko has said that the opposition candidate who gets most votes in the first round of the 2015 presidential election has to become the single candidate from the opposition.

"It's fair, transparent, democratic. This is a possible national primary. I'm an opponent of the nomination of a single presidential candidate from the opposition in the first round of the elections," Tymoshenko said in the second part of an interview with Ukrainska Pravda online publication.

According to her, the next presidential election will be "the most cruel and dirty" of the period of independence, and the opposition must not lose.

"That's why I think that ensuring the maximal demobilization of Yanukovych voters, as well as ensuring the radical mobilization of all supporters of the democratic forces is a key strategy for the future elections," Tymoshenko said.

The ex-premier also added that having a single opposition candidate in the first round would allow the spin doctors of current President Viktor Yanukovych to once again split the country into East and West, and allow him to win the elections.