A party "contests" an election if they have at least one candidate on the official ballot under the party name, participate in a formal coalition on the ballot, or have officially endorsed candidates with clear party affiliation. The party does NOT contest if they only endorse other parties' candidates, announce a boycott, fail to meet ballot access requirements, or only challenge results after voting without having participated. For multi-round elections, appearing on any round's ballot counts. For federal systems, contesting in any state/province counts for the federal election. If the election is postponed but occurs within one year, the contract remains valid. If cancelled or not held within one year, the market resolves to No.