The Jathika Hela Urumaya contested its first parliamentary elections on April 2, 2004, which were Sri Lanka's most recent legislative elections. All of its candidates were Buddhist monks. At these elections the party won 6.0% of the popular vote and nine out of 225 seats.
Since the election, the party has been involved in a number of controversial issues, such as the introduction of a law to criminalize unethical conversions and proselytism by foreign Christian fundamentalist groups. There has also been some quite dramatic infighting within the JHU parliamentary fraction, since the group which had been cobbled together just before the polls lacked unity on the issue of how to relate to government formation.
Two of its founding members, Theros Kolonnawe Sumangala and Uduwe Dhammaloka left the party after a conflict between the robed and lay members. The founder of the Sihala Urumaya also defected to the United National Party after seizing the party headquarters. After months of trouble, the party is strong again with the young monk Athuraliye Rathana Thero and the Sihala Urumaya member Champika Ranawaka leading the comeback. Ellawela Medhananda and Omalpe Sobhitha theros remain in the leadership. Other influential members include Dr Neville Karunatilake and Udaya Gammanpila. JHU is also affiliated with the National Movement Against Terrorism (NMAT), SPUR, North-East Sinhala Organisation (NESO) and other local and international Sinhala nationalist groups.
Jathika Hela Urumaya successfully appealed the supreme court to cut President Chandrika Kumaratunga's term short.
