Bahuguna cast his vote as Lok Sabha MP since he is yet to resign despite being elected to the vidhan sabha from Sitarganj assembly seat, Principal Secretary Vidhan Sabha D P Gairola said.
All the 69 MLAs, including PCC chief Yashpal Arya, cast their vote in the vidhan sabha premises where the voting took place.
Bahuguna is scheduled to resign from his Lok Sabha seat on July 21, sources said.