PTV gap: A new measure of party identification yielding monotonic partisan attitudes and supporting comparative analysis

Despite the cornerstone role of party identification for analyzing voting behavior in the United States, its measurement (in terms of the classic American National Electoral Studies – ANES – seven-point scale) is affected by a systematic problem of non-monotonicity, and it proved impossible to be directly applied outside the United States. We introduce a novel, complementary measurement approach aimed at addressing both problems. We test on US...