The Interior Ministry has said it has received about 950 complaints of voting violations, including unauthorized campaigning at polling places, attempts at vote-buying, and the removal of ballots.
Our Kyiv correspondent Christopher Miller spent part of election day in Ukraine with one of the far right's officially deputized vote monitors. Read the story here.
From the Central Election Commission: "no systemic violations" had been reported.
“There are isolated instances, but they are classic for any voting process in any election campaign,” CEC Secretary Natalia Bernatska told journalists.
The commission updated that figure to "more than 45 percent."
Some turnout information from our news desk: By midafternoon (1500 in Ukraine), more than 44 percent of eligible voters had cast ballots, according to the Central Election Commission.