Look at the NAFTA vote. The entire Democratic base was against it. It only passed Congress with all Republicans and some New Democrats.
Free trade split both parties along class lines. But now the difference is that white collar professionals have learned that they are every bit as economically vulnerable as auto workers were. Any job that is done in front of a computer terminal can be shipped overseas.
Basically we got to have more regulations on business then??? We got to outlaw progress so people can work forever at a factory?