There are some [immigrants] who are good, but then there are others. And now they have more rights than we do.-Marine Le Pen, Marseille rally 19 April 2017 In 2017, Marine Le Pen, the extreme right (ER) leader of the Front National (FN) was standing a chance of becoming France's next president. In recent years, the ER political ideology (also referred to as radical right and far right in the literature) has re-emerged in the political scene of Western Europe and raised serious concerns (Rydgren, 2007). For example, in the second round of French presidential election in 2002, the FN candidate has received 17.8% of the vote, while in 2017, this share increased to 33.9%. Despite a growing amount of research, a full understanding of why people would vote for the ER parties, especially if they may not normally support them, is lacking. The literature tends to focus on prejudice towards immigrants as the key variable predicting the ER vote, in other words, the argument is that those parties appeal others through their anti-immigration rhetoric with the focus on the immigrant threat (Cornelis & Van Hiel, 2015; Cutts, Ford & Goodwin, 2011; Green et al., 2016). Using a large representative sample, the current research adds to this literature and tests for the first time whether higher group relative deprivation (GRD), a perception that French people are worse off in comparison to immigrants, can predict the intention to vote for an ER candidate in France. Importantly, we argue that feelings of relative deprivation may sway voters towards an ER candidate even if voters may not usually vote for them or feel close to them. This may be critical in contexts whereby there are only two candidates to choose from, such as second rounds of presidential elections. Relative deprivation theory People do not make judgements of fairness in absolute terms in the social context but primarily by comparing how they are treated and what they are entitled to in comparison to other people or groups (Crosby, 1976). This principle has served as the basis for the development of relative deprivation theory, from early work on the American soldier (Stouffer et al., 1949) up to present-day research on prejudice, intergroup relations and political mobilisation (Mummendey et al., 1999; Osborne & Sibley, 2013; Pettigrew, 2016). Importantly, the principle of comparison can take place either at the interpersonal level or at the intergroup level (Runciman, 1966). Thus, individuals can experience individual relative deprivation