Is there a link between personality and the electoral and in-office success of politicians? Using the Ten-Item Personality Inventory, we examine whether the Five-Factor Model personality traits are correlated with political success among Belgian elected officials. We look at three different measures of political success, corresponding to different stages of the political career-electoral success, years in office, and access to an elite political position-and find lower levels of agreeableness are systematically correlated with greater success. These results are in line with those found among American and European CEO's (Boudreau et al. in J Vocat Behav 58(1):53-81, 2001). This study offers a unique insight in the type of personality voters and party leadership look for and reward among politicians.