The WSA ensured that no one party could "control" it through the self-denying 40% ordinance which limited members of any organisation to no more than 40% of the Alliance committees.
[1] The Socialist Workers Party has originally declined to accept the invitation to join the WSA because the SWP was opposed in principle to standing in elections.
The attempts by the SWP to dominate the WSA destabilised the organisation and by the end of 2002 both Cymru Goch and Socialist Party Wales had left.
The SWP ignored the 40% rule and packed meetings with members to ensure that its position prevailed and its supporters were selected as candidates.
Cymru Goch left when any opportunity to argue for its pro-independence position was closed off and the Socialist Party left when the SWP packed a selection meeting in Swansea to ensure that no Socialist Party candidates would be selected for Swansea seats in the General Election.