The accountability effect of endorsements: A survey experiment

Do endorsements from incumbent politicians to co-partisans lead to more electoral accountability for the performance of the government? I use a randomized experiment embedded in a national survey conducted before the 2012 Mexican general election to examine the effect of endorsements by the outgoing president Felipe Calderón to the Senate candidates of his Partido Acción Nacional (PAN). Results show that among PAN identifiers, the incumbent vote is more tightly linked to the performance of the president when voters are exposed to the endorsement. I improve on the current standing of the accountability literature by showing that the relationship between an outgoing politician and the candidates of her party matters for electoral sanctioning. My findings imply that politicians' strategic decisions have an effect on how voters assign responsibility: By nominating candidates without close ties to the endorser in cases of weak government performance, parties can use nominations strategically to diffuse responsibility.