What is the main purpose of disclaimers in political advertising?

The main purpose of disclaimers in political advertising is to disclose the source of funding for the ad. This requirement is in place to promote transparency in political campaigns and ensure that viewers are aware of who is paying for the advertisement. By disclosing the funding source, disclaimers help voters evaluate the interests and potential biases behind the message being presented. This practice aims to mitigate misinformation and allows the electorate to make more informed decisions regarding the political messaging they encounter.

The other options, while they may relate to aspects of advertising, do not capture the essential purpose of disclaimers. Providing a summary of the ad's content, enhancing effectiveness, or directly comparing candidates is not the primary focus of disclaimers, which are specifically aimed at revealing financial backers to maintain integrity in the electoral process.