Iranians cast ballots on Friday in an election run-off to decide who will fill the remaining 65 seats up for grabs in the country’s parliament.
The vote is mainly a duel between rival conservatives: those close to President Mahmoud Ahmadinejad and the country’s Supreme Leader.
Ayatollah Ali Khamenei said all Iranians “should take the run-off as seriously as the first round.”
His supporters already have a majority from that March vote, which saw more than 3,000 vetted candidates take part.
The European Union says the process is neither free nor fair.
With key opposition leaders under house arrest, reformists are boycotting the election.
Ahmadinejad has fallen out of favour with Iran’s clerics after he challenged Khamenei on the president’s powers.
The supreme leader appoints military leaders and the council that passes laws.