The electoral-college tag wiki says:
In the United States, the President is not elected directly by popular vote, but by electors chosen by each state, which can sometimes produce a different outcome from the popular vote. Use with the united-states tag
It seems this tag is claimed to be specific to the USA. Then how should we tag questions about electoral colleges outside the USA?
There are several other countries with electoral colleges. For example, in The Netherlands, there is an electoral college for the senate elections. The college electing popes arguably is one as well. Wikipedia lists a few more