I don’t see many blue dog dems where I live.
To me, a liberal is for abortion on demand, loves gay marriage and men using women’s bathrooms, welcomes illegals and terrorists with open arms, etc.
In the cases I know, I think its the open-border refugees that have finally made them “blink” in their knee-jerk liberalism. That, and a realization that Obama foreign policy has not made the world a safer place.