Another reason for the low registration has to do with the lack of choices of candidates to choose, he said.

Thais who live in foreign countries are allowed by the election laws to exercised their rights. They have to register first before casting their votes by mailing in their votes or cast it personally at the Thai embassy abroad.

Anucha said 103,604 Thais have registered for the previous election over year ago. But as of today, only about 22 per cent have showed up to vote. This was almost 30 per cent reduction compared to the national election last year.

The last day of the voting in foreign countries is Tuesday, he said.

"The Foreign Ministry believed that the reduction of the voter turnout of Thai overseas could possibly cause by many factors. They were because the April 2 election was set at very short notice providing not enough time for Thais to register," Anucha said.

Moreover the Thais may not be confident of the ongoing political problems in Thailand and there were no variety of candidates, so they decided not to vote. "Some Thais return to Thailand without withdrawing their registration," Anucha said.