Option 1 is clearly the answer. Whether or not you agree that the Democrats have consistently represented the interests of everyday Americans, this has clearly been their main talking point throughout history (and really the last connecter between the Party of Jackson and the Party of Roosevelt). Option 2 comes close, but "working class" suggests labor unions to me, and the Democrats were clearly anti-union during the Cleveland years. Option 3 isn't even partially true until 1932, and only fully true once the last of the Dixiecrats had left office in the 60s/70s. Neither party has a consistent record on civil liberties, so Option 4 doesn't work. Option 5 has been true at certain points in history, but has hardly been a constant theme from 1828 onwards.
Opposing the Republican Party and criminality. Nothing else, really.
There was no Republican Party when the Democratic Party was founded.
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