Former Punjab chief minister Captain Amarinder Singh is trailing behind Aam Aadmi Party (AAP) candidate Ajit Pal Singh Kohli from Patiala assembly constituency.

Singh, who is also known as Maharaja of Patiala, was confident of winning from his bastion.

If he loses, it could be one of the biggest upsets of the Punjab elections and also possibly bring down curtains on his political career.

Singh had quit the Congress after being unceremoniously removed as the chief minister in September. He was replaced by Dalit leader Charanjit Singh Channi.

Singh later formed his own political party, Punjab Lok Congress, and struck an alliance with the BJP.

There was a strong anti-incumbency against him during his four-and-a-half years of rule.