The Supreme Court has held that campaign contribution limits are a legitimate means of “deal[ing] with the reality or appearance of corruption inherent in a system permitting unlimited financial contributions.” Campaign contribution limits help to ensure that candidates are not overly reliant on a few wealthy donors to finance their campaigns. With a cap on individual contributions, candidates must also build a broader base of smaller contributions to be viable. As of 2014, the federal government and 38 states had enacted campaign contribution limits. Thirty-four states have also enacted local campaign contribution limits.

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