I wouldn't look for too much meaning in such statements. In my opinion, the thing that we need to understand is that: Since the 1970s (the beginning of the so-called 'neoliberal' era) politicians of both major parties have either lost the ability or given up the desire to manage the economy for the prosperity of the broad population.
The reasons for this are many and complex. Basically, then, the only thing politicians (and their suppporters) have left is fear (War on Terror; an obsession with 'security'); by the way there's a very good documentary movie called "The Power of Nightmares," produced by Adam Curtis for the BBC. His thesis is this: in the past politicians assumed leadership and authority based on the idea that they could assure the general prosperity of all. Those dreams failed and all they have left to hold onto their power and authority is their promise that they will protect us from the nightmare of Islamic fundamentalist international terrorism.
The only other thing politicians and their adherents have left, right now, is vitriol. They practice what they call excessive 'partisanship' and then accuse the other side of it, and so on and so forth.
By the way, this 'super pac' business, combined with the Supreme Court's 'Citizens United' decision, cannot be good for the substantive content and civility of political campaigns going forward!
Take it easy.