Third party advertising refers to advertisements or other materials that support, promote, or oppose a candidate, or support, promote, or oppose a "yes" or "no" answer to a question on the ballot. This can be an advertisement in any broadcast, print, electronic, or other medium.
Third party advertising is separate from any candidate's campaign, and must be done independently from a candidate. Any advertisements or materials that are made and distributed by a candidate, or under a candidate's direction, are part of the candidate's campaign.