Despite numerous studies demonstrating a winner–loser gap in voter satisfaction with democracy, the temporal dynamics of its initial emergence remain poorly understood. This study introduces a new framework, distinguishing between short- and long-term effects. Short-term effects refer to immediate attitudinal shifts among winners and losers triggered directly by the establishment of the result. Meanwhile, long-term effects unfold gradually thereafter, through processes like cue-taking and motivated reasoning, polarizing voter attitudes over an extended period following the election. Leveraging survey data coincidentally collected during elections, the empirical analysis provides evidence for both effects. However, it is the long-term mechanisms that predominantly explain the gap’s emergence. Notably, in elections where a government transition occurred, a new gap did not materialize until a few weeks after the outcome solidified. These findings illustrate the temporal complexity of voter reactions, carrying significant implications for addressing challenges related to system support during election periods.