Outline the workings of the regional party list electoral system.

The regional party list electoral system is used in the UK to elect MEP's to the European Parliament. The party list is an example of a proportional representation system that leads to regions having multiple representatives. The open party list electoral system is quite a unique electoral system because voters choose between candidates as well as parties. This means that parties rank their candidates, with those higher on the list having a greater chance of being elected.