Knowledge of the profiles of blank voters and multi-party voters and the underlying dynamics of these forms of voting is very defective. At least three phenomena of political-psychological importance may foster interest in these forms of ambivalent or deviant voting behaviour: 1) so-called political 'homeless' who are interested in politics but notparty-organized 2) political indifference 3) protest voting. Data of a study on social and political attitudes among Brussels students (n = 1393) were used to analyze socio-demographical correlates and attitudinal profiles of blank and multiparty voters. Differentiations among multi-party voters are indeed linked to specific attitudinal profiles.