The story: Iranian Reformists appear to be rallying behind Masoud Pezeshkian, their only candidate in a presidential race dominated by conservatives. State-affiliated outlets insist that the elections are competitive because candidates from across the political spectrum have been cleared to run. Pro-reform media, however, argue that five of the six candidates represent a bitterly divided conservative camp.

This comes as campaigning has kicked off with candidates appearing on state television to explain their programs, and as a new poll could...