This paper reports a survey (N = 1,465) conducted in Chile that was conceived to understand the role of coalition identification as an important sociopsychological mechanism for promoting positive affects toward own-coalition party members in a multiparty system, above and beyond interparty political differences. Participants judged their own political party, parties within coalitions (fellow coalition members and opposing parties), and political coalitions as a whole on affective dimensions (trust, liking, and admiration). The results provide substantial support for the five hypotheses addressed in the study. Overall, perceived interparty distance and political identity threat had a negative impact on affect toward coalition party members. Above and beyond these effects, identification with the coalition positively predicted affect toward allies. Ingroup party affect was positively correlated with affect toward own-coalition party members and own coalition as a whole, but was not negatively associated with affect toward opposing-coalition parties. Moreover, the relationship between own-party affect and affect toward own-coalition party members was mediated by affect toward own coalition. Overall, evidence for the benefits of promoting coalition identification in a multiparty system is provided and discussed alongside the limitations and practical implications derived from the study.