If Marco Rubio has announced that they will run for President of the United States in 2028 before Apr 1, 2027, including running for the nomination of any political party to contest that office, then the market resolves to Yes. The person must publicly announce their campaign for it to be reported by a Source Agency. Merely filing campaign paperwork with the Federal Election Commission or similar entity is insufficient without a public announcement. The announcement must be for the specific office and election year listed. Exploratory committees or statements of interest without formal campaign announcements do not qualify. Running for a party's nomination to contest the office counts as running for that office. The announcement must come from the person themselves or their official campaign, not from speculation or third-party sources. This market will close and expire early if the person announces their candidacy.