Voters were unenthusiastic about either candidate but seemed to feel Yanukovich, a former premier who stressed the fight against poverty, had the best chance of restoring order.
"We lost five years of our lives thanks to Yushchenko and Tymoshenko," said Oleg Nochvyn, a miner in his 50s in the eastern region of Donetsk.
"For five years they were promising us -- tomorrow will be better. Well, I get up the next day and it's worse than the day before ... Under Viktor Fyodorovich (Yanukovich) we had everything -- economic growth, everything was getting better."
Regardless of the outcome, squabbling was set to continue, reflecting the country's broader divisions. Ukraine is divided almost equally between a Russian-leaning east and south and a Western-friendly centre and west.
With a Yanukovich victory, Tymoshenko can expect to be ousted as premier by a vote of no confidence in parliament. Yanukovich will then try to form a new coalition to get his own ally into the role, or call a snap parliamentary election.