Bloviation is a style of empty, pompous, political speech that originated in Ohio and was most notably used by Warren G. Harding in his successful 1920 US presidential campaign.
[1] His opponent, William Gibbs McAdoo, compared it to "an army of pompous phrases moving over the landscape in search of an idea.
[3][4] As a form of political speech, it appears in the Debates and Proceedings of the Convention for the Revision of the State of Ohio in the mid 19th century.
[3] One etymology suggests that the word is a "compound of blow, in its sense of 'to boast' (also in another typical Americanism, blowhard), with a mock-Latin ending to give it the self-important stature implicit in its meaning.
[7] He complained that the style was suited to Ohio yokels:[8] Addressing such simians, the learned doctor acquired a gift for the sort of discourse that is to their taste.