The argument for voting against left-wing or socialist candidates on the grounds that they can’t win and are therefore helping the right wing into power has, of course, been a time-worn argument in the United States against bucking the two-party system. Engels, in an 1893 letter to an American colleague, pointed out that in the United States, the formation of a workers’ party is hindered by the “Constitution…which makes it appear as though every vote were lost that is cast for a candidate not put up by one of the two governing parties.” isreview

virtue-signalling : the act or practice of conspicuously displaying one’s awareness of and attentiveness to political issues, matters of social and racial justice, etc., especially instead of taking effective action