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In French parliamentary and local elections, candidates ranked first and second in the first round automatically qualify for the second round, while a third candidate qualifies only when selected by more than 12.5 percent of registered citizens. Using a fuzzy RDD around this threshold, we find that the third candidate's presence substantially increases the share of registered citizens who vote for a candidate and reduces the vote share of the top two candidates. It disproportionately harms the candidate ideologically closest to the third and causes his defeat in one fifth of the races. These results suggest that a large fraction of voters value voting expressively over voting strategically for the top-two candidate they dislike the least to ensure her victory; and that absent a party-level agreement leading to their dropping out, many third candidates value the benefits associated with competing in the second round more than influencing its outcome.
