The principle of stability of electoral law also implies that the amendments can be properly implemented.9 More precisely, any reform of electoral legislation to be applied during an election should occur early enough to allow candidates and voters to understand the changes and the electoral management bodies to understand and apply them.10 The Venice Commission is not in a position to assess the practical arrangements made to apply the legislation but considers that the best way to test the impact of a change of law is to do a controlled experiment in which the law changes for a subset of people. Having a trial or pilot is a great way to obtain genuine insight into the likely consequences of a law change.11 A trial of a possible new approach while maintaining the status quo for everyone else may be both politically acceptable and practically workable.12 The best way of doing a trial is a randomised controlled trial administered by the same institutions that would administer any wider roll-out. However, there should not be any conclusive objections to adopting different approaches for different people during the time required by the trial.13 There are examples of Council of Europe member States that allow for trials in their electoral laws.14 At any rate, it is important to ensure the project can be fully implemented within the time limit and with the necessary measures in place.