Thailand

A person shall enjoy the liberty to unite and form an association, co-operative, union, organisation, community, or any other group. ... (Sec. 42)

A person shall enjoy the liberty to unite and form a political party under the democratic regime of government with the King as Head of State, as provided by law. … (Sec. 45)

A person shall have the following duties:
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7. to freely exercise his or her right to vote in an election or referendum, taking into account the common interests of the country as prime concerns;
… (Sec. 50)

A person having the following qualifications has the right to vote at an election:
1. being of Thai nationality, provided that a person who has acquired Thai nationality by naturalisation must hold the Thai nationality for not less than five years;
2. being not less than eighteen years of age on the election day;
3. having his or her name listed in the household register in the constituency for not less than ninety days up to the date of the election.
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A voter who fails to vote without notification of a reasonable cause under the Organic Act on the Election of Members of the House of Representatives may be subject to a restriction of certain rights as provided by law. (Sec. 95)

National reform in various areas shall be carried out to at least achieve the following results:
a. Politics:
1. ensuring that people have correct knowledge and understanding on the democratic regime of government with the King as Head of State, that people participate in the organisation of political activities as well as the scrutiny of exercise of State powers, that they are able to tolerate different bona fide political views, and that the people exercise the right to vote in an election and in a referendum independently and free from influence by any mean;
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4. having a mechanism that requires persons holding political positions to perform duties with integrity and to be held accountable to the public in the performance of their duties;
... (Sec. 258)