The lion share of decisions by politicians is risky in that their outcomes are unknown. While the literature on politicians’ decision making under risk is extensive, it typically focuses only on decision making in one dimension. Yet, many decisions by politicians involve trade-offs in multiple dimensions, for instance the economy vs. electoral standing; or the economy vs. public health. Such decisions are difficult, but there is only limited empirical evidence on how politicians make them. Since politicians’ decisions are often both consequential for themselves and for others, this is a major lacuna. Therefore, this study will examine to what extent politicians’ personality characteristics influence how they make decisions involving trade-offs in multiple dimensions. To this end, we will conduct a survey experiment with a large sample of Norwegian elected local politicians that allows us to examine how they make decisions under risk that involve trade-offs between data privacy and the (local) economy. The survey also includes a module on personality characteristics, using the HEXACO Personality Inventory that defines six personality factors (Honesty-Humility, Emotionality, Extraversion, Agreeableness, Openness to Experience, Conscientiousness). We hypothesize that especially the Honesty-Humility domain that is characterized by sincerity, fairness, greed avoidance and modesty will influence how politicians make decisions with multiple dimensions. Hereby, our study’s findings will contribute to the growing, yet still relatively scant, literature on the influence of politicians’ personality characteristics on their decision making.