The ruling United National Front presidential candidate Sajith Premadasa (3rd R) attends a final campaign rally in Colombo, Sri Lanka, on Nov. 13, 2019. The presidential elections of Sri Lanka will be held on Nov. 16. (Photo by Gayan Sameera/Xinhua)

Supporters of the ruling United National Front presidential candidate Sajith Premadasa attend a final campaign rally in Colombo, Sri Lanka, on Nov. 13, 2019. The presidential elections of Sri Lanka will be held on Nov. 16. (Photo by Gayan Sameera/Xinhua)

Gotabaya Rajapaksa (2nd L), Sri Lanka's presidential candidate of the main opposition Sri Lanka Podujana Peramuna (SLPP), attends a final campaign rally in Homagama, outskirts of Colombo, Sri Lanka, on Nov. 13, 2019. The presidential elections of Sri Lanka will be held on Nov. 16. (Photo by Gayan Sameera/Xinhua)

Supporters of Gotabaya Rajapaksa, Sri Lanka's presidential candidate of the main opposition Sri Lanka Podujana Peramuna (SLPP), attend a final campaign rally in Homagama, outskirts of Colombo, Sri Lanka, on Nov. 13, 2019. The presidential elections of Sri Lanka will be held on Nov. 16. (Photo by Gayan Sameera/Xinhua)