Story highlights Tehran province voters favor reformists, but national election results are pending

Voters selected members of parliament and the Assembly of Experts

Tehran, Iran (CNN) Early election results in Iran indicate major support for reformists and supporters of President Hassan Rouhani, who signed last year's landmark nuclear deal that limited the country's nuclear program in exchange for sanctions relief.

Results for Tehran province, which is the country's most populous, showed a sweep by reformists and moderates of all its 30 parliamentary seats. Also, reformists won 15 of the province's 16 seats for the Assembly of Experts, a crucial body that would determine the country's next supreme leader.

JUST WATCHED Iran: Reformists poised to win parliamentary seats Replay More Videos ... MUST WATCH Iran: Reformists poised to win parliamentary seats 01:50

Official results for the two national institutions are expected to be announced soon. But early indications at the reformers have scored well in these elections.

On Friday, voters had to select members of two crucial governing institutions: the Parliament and the Assembly of Experts. There are a total of 290 seats in parliament and 88 members for the Assembly of Experts.

Read More