group of independents; independent caucus
Refers to an informal grouping of independent politicians in the National Diet or prefectural assemblies, not a formal political party.
In the Diet, the group of independents sometimes makes its presence felt despite its small numbers.
He doesn't belong to any party and participates in the independent caucus.
会派 is a broader term for any parliamentary group or faction, while 無所属クラブ specifically refers to a group of independents.
Compound of 無所属 (independent, unaffiliated) and クラブ (club), a straightforward modern political term.