The term "coattail effect" in political elections refers to the phenomenon where a successful candidate from a particular party can positively influence the electability of other candidates from the same party on the ballot. This effect often occurs during presidential elections, where a candidate’s popularity can lead to increased votes for fellow party members running for lower offices. Coattail effects can enhance party representation and help secure a legislative majority. Conversely, poor performance from a high-profile candidate may negatively impact down-ballot candidates from the same party.