The article explores the impact of extreme right-wing parties on centrist and moderate right political groups in Brazil and other Western democracies. It notes a significant erosion in party membership and electoral strength for these centrist factions as they struggle against the growing influence of radical ideologies. This shift is observed not only in Brazil but also in multiple Western nations where extreme right groups have successfully established their own political parties, effectively altering the political landscape.

In countries with multi-party systems, such as France and Germany, radical parties like the National Front and Alternative for Germany have emerged to capitalize on discontent among voters. The article lists various examples of far-right parties across Europe, including Chega in Portugal and Vox in Spain, which have gained traction by appealing to national identity and immigration concerns. Conversely, in majoritarian electoral systems like the United States and the United Kingdom, the rise of extreme right affiliation within established parties poses unique challenges as evident in the case of Donald Trump reshaping the Republican Party and Nigel Farage's Reform Party putting pressure on the Conservatives.

The implications of these developments are profound, potentially leading to a political realignment and redefinition of party ideologies across the globe. The article highlights the urgency for centrist and moderate parties to reevaluate their strategies and reconnect with the electorate in order to counter the narrative and appeal of the far-right. As traditional political landscapes shift, the future of liberal democracy may hinge on this re-engagement and the capacity to address the concerns that have fueled extreme right support.