Kiev, Ukraine ? Ukraine’s fiery opposition leader Yulia Tymoshenko said Tuesday she expects to become the country’s next prime minister, given her stalwart support for Viktor Yushchenko, whose presidency is increasingly likely.

In an interview with The Associated Press, Tymoshenko said she and Yushchenko signed a written agreement when she joined his coalition that leaves no alternative than for her to head a new government when Yushchenko is inaugurated.

“I believe that Viktor Yushchenko will follow our formal agreement,” said Tymoshenko, whose elaborately braided hair, hip orange outfits and sharp tongue have earned her thousands of worshippers among the opposition.

Asked whether anyone else could become prime minister, she replied: “There are no other alternatives.”

Yushchenko, who won a court-ordered revote on Dec. 26 but has not been declared the victor as his opponent appeals the results, has so far refused to say who he will tap to be prime minister.

The Central Election Commission said it expected to announce final results today, at which point Yushchenko’s opponent, Viktor Yanukovych, is expected to file an appeal with Ukraine’s Supreme Court.

Side-by-side with Yushchenko, Tymoshenko became the face of the mass movement dubbed the “Orange Revolution” — when thousands of opposition supporters flooded the streets of Kiev following the Nov. 21 fraud-marred second-round vote.

She jumped on the backs of trucks to rally the crowds, clambered over a riot police line and repeatedly called for a forcible seizure of power from the opposition’s stage on Independence Square. At her behest, protesters stayed on the streets.

“I don’t have any doubt that parliament will support my candidacy if Yushchenko will propose it to the parliament,” Tymoshenko said. She would need a simple majority in the 450-member parliament to win the post.

Some critics have suggested that naming Tymoshenko, a Western-leaning former deputy prime minister, to the premier’s job could deepen the division between western and eastern Ukraine, a rift that was vividly exposed during the election.

In a move aimed at winning over the wary, Russian-speaking east, Tymoshenko made a live televised appearance last week in Donetsk, Yanukovych’s hometown and base of his support.

She adeptly answered one hostile question after another, speaking in Russian, then ended the interview by handing over a giant, stuffed red toy heart, saying she hoped the region would accept it.

“In very short time, they will understand that they won the election too,” she told the AP.