22 is standard. Mahinda and others from the ruling party avoid voting.

Yesterday (21st) the 22nd Constitution Amendment Bill was passed by majority vote and some MPs did not come to the Parliament to vote.
A large number of members of the ruling party were among the members who did not come. Among them former Prime Minister Mahinda Rajapaksa, Minister Prasanna Ranatunga, Sagara Kariyawasam, Johnston Fernando, Pavitra Vanniarachchi, SM Chandrasena, Gamini Lokage, Rohitha Abeygunawardena, Janaka Bandara Tennakoon, Sanjiva Edirimanna and others. MPs were.
Meanwhile, after the committee session, the third reading poll was held, where the 22nd constitutional amendment was passed with 173 votes in favor.
Only Real Admiral Sarath Weerasekera MP has voted against.
However, this amendment contains many positive points favorable to the country and the people, and the absence of many MPs who constantly talk about the welfare of the country to not vote is a questionable issue.