Jharkhand Chief Minister Shibu Soren has lost by-election to Tamar assembly seat to Jharkhand Party candidate Gopal Krishna Patar by a margin of 9000 votes. The defeat may cost Soren Jharkhand Chief Minister's seat. The results are not surprising in that many dissidents from the ruling UPA alliance covertly opposed Soren, who was sworn in as chief minister on August 27, 2008.