Unofficial results indicate that the SLPP would comfortably win at least 17 out of the 22 districts on offer.
Rajapaksa was appointed as the premier on October 26 by President Maithripala Sirisena after sacking Ranil Wickremesinghe, plunging the nation into a constitutional crisis.
From Sri Lanka's most popular political family to its most despised -- going by the voices on the streets calling for the Rajapaksas' ouster -- what went wrong for the clan? Veteran Sri Lanka watcher N Sathiya Moorthy offers an insight.