0 a group of people who have left a political party or other organization and formed a new separate organization: --
1 a group of people who have left a political party or other organization to form a new, separate organization --
Additionally, new and splinter groups may come on the scene.
In 2000 another splinter group of supporters came together.
A schismatic is a person who creates or incites schism in an organization or who is a member of a splinter group.
It appears that the planet was settled by a splinter group of the thirteenth tribe.
However, a splinter group soon formed with quite different intentions.
Some members, including myself, strongly opposed such splinter group and warned that such a move will split our community into small groups.
There was a sudden march by the counter-demonstrators and a splinter group of extremist elements broke away and tried to force their way, without success, through the police cordon.
That person may not be a member of a party accountable to a substantial number of voters, but may be a member of a small regional or splinter group.