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.br br The vote is mainly a duel between rival conservatives: those close to President Mahmoud Ahmadinejad and the country's Supreme Leader.br br Ayatollah Ali Khamenei said all Iranians "should take the run-off as seriously as the first round."br br ...