I analyzed the role of emotional reactions to negative campaigning as mediators of the link between exposure to negative messages, evaluations of candidates, and voting behavior. In an experimental study (N = 103) I found that exposure to issue-based negative messages from the outparty provoked anxiety, which increased selective exposure to political information that, in turn, improved the outparty evaluation; and exposure to person-based negative messages from the inparty provoked aversion, which negatively influenced inparty evaluation. Finally, the evaluations of candidates significantly predicted vote choices.