
Funeral rites will be held at Wat Phra Sri Mahatat in Bang Khen, Bangkok, family members said.
The body will then be taken to Sang Khom district in his home province in preparation for cremation in December.
Somkid led the Seri Prachathippatai Party into the 1969 polls and became its only member elected as a member of parliament.
From 1975 to 1986 he chaired a committee charged with constitutional reform.
He also served one term as senator for Udon Thani.