In the wake of major events, whether these be terrorist attacks 1 , global pandemics such as the coronavirus disease 2019 (COVID-19) outbreak 2,3 or presidential elections 4 , conspiracy theories predictably surge across the Internet. Conspiracy theories, defined as beliefs that a group of actors are colluding in secret to reach a malevolent goal 5,6 , are common across times, cultures and populations 7,8 . Accumulating research has revealed that a reliable predictor of belief in one conspiracy theory is belief in another conspiracy theory 1,[9][10][11] . It therefore appears that people differ in their predisposition to explain events as conspiracies, which is sometimes referred to as 'conspiracy mentality' or the 'conspiracy mindset' [12][13][14] . The conspiracy mindset is closely associated with belief in a wide range of existing specific conspiracy theories, as well as the endorsement of conspiracy theories created by researchers for experimental purposes 15 . It differs from concrete conspiracy beliefs in that it taps into the general propensity to suspect that conspiracies are at play, uncontaminated by concrete events, actors or contexts.The political realm in particular is one key area where conspiracy beliefs are salient and thriving 16 . For instance, conspiracy theories are intrinsically connected to the rhetoric of populist political leaders who arguably exploit conspiracy theories for strategic reasons 17,18 . Importantly, citizens' belief in conspiracy theories predicts voting behaviour and intentions 19,20 and non-normative political action 21,22 . Traditionally, conspiracy beliefs have been associated with authoritarian worldviews 23,24 , as exemplified by positive relations between conspiracy beliefs and right-wing authoritarianism [25][26][27] . Stripping a politically right-wing stance from the surplus meaning of authoritarianism (and its strong connection to traditions and authorities), many studies have found a linear relationship between self-reported political orientation and conspiracy endorsement 16,28,29 , suggesting that conspiracy beliefs are more common at the political right than at the political left [30][31][32][33] .However, in contrast to this simple, linear relation, numerous findings point to a curvilinear relation between political orientation
