5. how does the electoral college's "double-election” system work?

It is working by method where two candidates votes are counting and if they are the same there must be a second round.

Explanation:

The double-election system or the two-round system is representing a voting method. In this method, we can see the election of one winner and in that election, the voter casts one vote for the candidate that they will choose.

The two candidates with the most votes can be eliminated and there must be a second round. It is the system that is used all around the world when it comes to elections.

For example, in French, Brazil, Bulgaria, North Macedonia, Austria, Ecuador, Finland, and other countries. In Italy, this system is used to elect mayors and decide about the party that will receive a bonus in city councils.

you should think about the answers you give and expect the same form your questions.

i believe that the answer to the question provided above is that the role of campaign committees is to act as a bridge between state and local campaigns.