New political groups are emerging to contest Myanmar's next election in 2020, aiming to challenge the hegemony of national civilian leader Aung San Suu Kyi after she has been weakened by escalating ethnic conflicts and slowing economic growth.

Those factors were blamed by party officials for the poor performance of Suu Kyi's National League for Democracy in by-elections in November, when it won only seven of the 13 seats up for grabs as regional and army-linked parties made gains.

"Now that ethnic parties have allied with one another and prepared, we can't fully rely on the power of the party. We must try harder than before to win the trust of the people," said Dashi La Seng, an NLD lawmaker from the northern state of Kachin, where the party lost a seat in November.