The 4th Arunachal Pradesh Legislative Assembly election was held in 1990. The Indian National Congress won the popular vote and a majority of seats and Gegong Apang was re-elected as Chief Minister of Arunachal Pradesh.
The election was held in 1,528 polling stations and on an average there were 334 electors per polling station.
NO. OF VALID VOTES <nowiki>:</nowiki> 349098
NO. OF VOTES REJECTED: 7,191 ( 2.02% of Total Votes Polled)