Argumentum ad nauseam refers to the logical fallacy that an argument is correct by virtue of it constantly being repeated. Argumentum ad hominem is the fallacy that a point is wrong because of personal critiques of the person making it.
A new logical fallacy should be added to the list: Argumentum ad centrum, or the flawed claim that an assertion is accurate because it is from the ideological center.
The argumentum ad centrum is increasingly popular in politics today, as working-class people all around the world become more and more frustrated with the status quo. The rapid rise of left-wing alternatives to an increasingly right-wing political modus operandi — with Bernie Sanders in the U.S., Jeremy Corbyn in the U.K., Podemos in Spain, Syriza in Greece and more — has apologists for power on the ropes, desperately clutching for any argument that can beat back the dissent and discontent.