Answer + Explanation:
(before getting into it, grammar police here; the question should be asked like this: "What democrat lost the presidential election of 1928?")
Anyways; in the presidential election of 1928, the Democratic candidate was Al Smith, a four-time governor of New York. Smith was the first Catholic to be nominated for president by a major party and faced opposition from some Protestant groups as a result. He ran on a platform of progressive reforms, including increased government regulation of business, but he was ultimately defeated by the Republican candidate, Herbert Hoover. Hoover won the election by a wide margin, carrying 40 of the 48 states and earning 444 electoral votes to Smith's 87.