“FDR Democrats were perceived as a working man’s party.”
The spread of those lies can largely be blamed on the media, especially the print media pre-TV. That lie is similar to the lie that the KKK is/was a GOP invention when it actually was created by the RAT party as its Thug Arm.
Oh of course. Media propaganda played a huge part of Democrat dominance...until talk radio and the Internet destroyed that stranglehold.