Abstract The 2022 Russian invasion of Ukraine raised for many parties the question of how to position themselves in view of urgently requested arms deliveries. Since, the topic of arms trade, which has hitherto rarely been addressed, has become a heavily politicized and divisive issue and partly even polarized public opinion. A major prerequisite for parties’ position-taking is to anticipate how voters react to such arms transfers and, more specifically, whether their respective attitudes are structured along the predominant left-right axis. Based on a large-scale survey experiment with French and German voters ( $N = 6617$ ) in the year before the Russian invasion, we are able to focus on the relationship between ideological predispositions, vote intentions, and issue attitudes in a non-politicized period. Using both vignette and conjoint experiments, we demonstrate that voters’ attitudes on military transfers can be subsumed remarkably well under the left-right scale. Differentiating the impact of normative and economic considerations, the former is stronger among the left, while the latter also affects the attitudes of rightist citizens. However, normative considerations are the most important concern along the whole political spectrum. The turn of the German Green Party in 2022 to assist countries that are being aggressively attacked (because of the Responsibility to Protect), was not reflected in our data.