Replication data for: The Power of Partisanship in Brazil: Evidence from Survey Experiments

To what extent do party labels influence individuals’ policy positions? Much research has examined this question in the US, where party identification can generate both in-group and out-group pressures to conform to a party's position. However, relatively little research has considered the question's comparative generalizability. We explore the impact of party labels on attitudes in Brazil, a relatively new democracy with a fragmented party system. In such an environment, do parties function as in-groups, out-groups -- or neither? We answer this question through two survey experiments, one conducted on a nationally-representative sample and another on a convenience sample recruited via Facebook. We find that both in- and out-group cues shape the opinions of identifiers of Brazil’s two main parties, but that cues have no effect on non-partisans. Results suggest that party identification can structure attitudes and behavior even in \"party-averse\" environments.政党标签在多大程度上影响个体的政策立场？已有大量研究在美国语境下探讨了这一问题：在美国，政党认同（party identification）会同时产生内群体（in-group）与外群体（out-group）压力，促使个体遵循所属政党的立场。然而，鲜有研究探讨该问题的跨情境普适性。我们以巴西为研究对象，探讨政党标签对民众态度的影响——巴西是一个政党体制碎片化的新兴民主国家。在这类政治环境中，政党是否会发挥内群体、外群体的作用，抑或二者皆非？我们通过两项调查实验解答这一问题：一项基于全国代表性样本开展，另一项依托通过脸书（Facebook）招募的便利抽样样本。研究结果显示，内群体与外群体线索均会影响巴西两大主要政党支持者的态度，但对无党派人士（non-partisans）并无作用。该结果表明，即便在‘厌党’的政治环境中，政党认同仍可塑造民众的态度与行为。