As Juan Cole explains, Rafsanjani's Friday prayer sermon was a paean to popular sovereignty in the Islamic Republic
, in which he noted that even the Supreme Leader is indirectly elected by the people. It places him squarely in the reformist camp in a way he simply wasn't before, endorsing not only their candidate as an opponent of the principlists, but their core tenets, as well. Coming from a pillar of the establishment in such a high-profile setting, it also contributes to a weakening of the aura surrounding the office of the Supreme Leader, and sends a strong signal that the Green Wave is not over, even if it's path to victory is not yet apparent.
(Crossposted to American Footprints