Main supporter of PACs:

Main supporter of PACs are the members of the political action committee who raise money to fund the campaign of the candidates of the elections.

Explanation:

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Main supporter of PACs are the members of the political action committee who raise money to fund the campaign of the candidates of the elections.

Explanation:

PAC stands for the political action committees which are mostly formed to give funds to the campaigns either in favor of a particular candidate or against a particular candidate.

The money might be raised from the donations by the members of the committees which might be business organisations. The money raised can also be used for ballot initiatives or for legislation also.