Thai opposition parties are pushing ahead with talks to form the next coalition government after their general election victory two weeks ago. But a rift between two main parties appears to be slowing progress.

Leaders of eight opposition parties discussed personnel issues on Tuesday. Attention is now focused on the House Speaker's seat, which will play a significant role in the parliament. Two leading parties, Move Forward and Pheu Thai, are both vying to fill the position.

The Move Forward Party won the largest number of seats, gaining support from young voters. The Pheu Thai party is affiliated with former prime minister Thaksin Shinawatra, and came in second.

After Tuesday's meeting, the Move Forward Party's leader Pita Limjaroenrat declared that the speaker seat issue was not straining the coalition. He said Move Forward and Pheu Thai have agreed to consider options together.

Pheu Thai's leader also stressed unity. He said that no matter what happens, the parties will form the government.

The 8-party alliance signed a memorandum of understanding last week, to work toward a coalition.

Move Forward diverges from its allies on some key issues. Among these is reforming the lese-majeste law, which forbids insulting the royal family. Amending this law was not included in the 8-party agreement.

A rift between Move Forward and Pheu Thai appears to be widening since the agreement was released. Some Pheu Thai supporters have even mentioned withdrawal.