The polling for the state's lone Rajya Sabha seat, fell vacant following the expiry of the term of office of incumbent MP Mukut Mithi on May 26 last.
"Despite knowing the fact that we don't have sufficient representation in the state Assembly yet we have decided to field our candidate for the Rajya Sabha seat.
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We will fight the elections in true spirit of democracy," newly elected BJP Legislature Party leader Tamiyo Taga said.
When asked who will be the party's official nominee for the post, he said the party's central parliamentary board would decide about it.
The BJP has 11 legislators in the 60-member Assembly while its ally People's Party of Arunachal (PPA) has five MLAs.
While the notification for RS polls was issued today, the last date of filing nominations would be June 9 and scrutiny of papers would be done on June 10.
The last date for withdrawal of candidature is June 12 and counting of votes would take place on the day of polling, June 19, itself.