Drifting? Like in the wind? Let's try a more appropriate descriptive verb, like say, "in a scorched earth charge".
The genius of the democrats, in the past, is that they were able to mask their true political philosophy (Maoism, Kleptocracy) with a perception that they were the voice of reason for the working class. With the election of Trump, they have now been forced to remove that mask and show their hand. If this had been Jeb! versus Hillary, it would’ve been business as usual.