It consists of one deputy from each of 687 constituencies, elected to five-year terms.

The first vote is for a candidate to become the Assembly Member for the voter's constituency, elected under the first past the post system.

The six MLAs for the constituency elected in the 2007 election were:

The first vote may be used to vote for a candidate to become the Assembly Member for the voter's constituency, elected by the first past the post system.

The election took place on the same day as the referendum on merging Stanley and the Camp into a single electoral constituency elected by proportional representation.

The six MLAs for the constituency elected in the 2011 election are:

The remaining eight seats are single constituency, elected by a first-past-the-post system.

Each is a three-seat constituency elected under the Single Transferable Vote.

Forty of the AMs represent geographical constituencies, elected under the First Past the Post system.

The reforms saw the creation of eight multi-member constituencies elected using PR together with 11 compensatory seats.