28. With regard to situations in which martial law or a state of emergency is declared after calling the elections but before the voting day, more detailed elaboration of the measures to be taken, and time frames both for making such decisions and for how long they would apply are advisable. Some of the processes already carried out before the emergency may need to be repeated if the election day is postponed for a longer period. For example, if the postponement of elections is decided after the registration of candidates, no additional registration should be necessary if the elections are postponed for just a month or two; in case the elections are postponed for an extended period (e. g. due to war), a repeat registration of candidates will be necessary. A new voters’ list will also be necessary, but there may be some aspects that do not need to be repeated – e. g. establishing special accounts for campaign purposes. When an election is postponed for an extended period the political environment and landscape may change, the priorities of the electorate may shift and as a result new candidates may emerge, or contestants’ platforms and strategies may change. Further, conflicts and war as well as significant natural disasters can result in movement of the voting population. In such cases, there should be a clearly defined point when the elections can no longer be suspended but have to be terminated and restarted at the end of martial law or state of emergency.