Hoover did not “do nothing for four years,” as the Democrats have contended ever since (remember the phrase “George Herbert Hoover Bush” from 1992?). Unfortunately, many of the actions he took, such as raising taxes and tariffs and trying to keep wages high in the face of a deflation of the currency only made matters worse.
In contrast to Hoover and FDR, President Warren G. Harding fought the depression of 1919 by cutting taxes and downsizing the federal government. By the time he died in 1923, a recovery was well underway.
And 4 more years of Hoover would have been better?