The counting of votes which was scheduled for June 27 has been deferred to June 30, Chief Electoral Officer, Narendra Chauhan said.
The Election Commission has extended restrictions on exit poll up to 5.30 pm on June 27, he said.
Elaborate arrangements have been made to ensure peaceful, free and fair elections and 10,72,425 electors of five districts would cast vote tomorrow, while 52,360 voters of Kinnaur would exercise their franchise on June 27, Chauhan said.
256 polling stations have been included in sensitive and 82 in the hypersensitive category, he said.
Congress candidate Pratibha Singh, wife of Chief Minister Virbhadra Singh, is pitted against former BJP minister Jai Ram Thakur in a five-cornered contest, with three independent candidates in the fray.
Border areas with neighbouring states have been sealed as a preventive measure to avoid infiltration of "undesirable elements", Chauhan said.