Congress heavyweight P C Chacko was humbled by cine actor Innocent, who contested as LDF independent in Chalakkudi.
According to political observers, Chandy is unlikely to face any serious threat from within the Congress as none of his potential rivals are capable of challenging him in the prevailing circumstances.
The big task before him, however, is how well he succeeds in engaging effectively with the Narendra Modi Government assuming office at the Centre later this week.
Several major projects like Vizhinjam Port in the state would require the Centre's support.
Soon after the elections results were declared on Friday, Chandy had expressed confidence of striking a smooth working relationship with the new government without compromising on the political ideals of Congress.