Keep in mind that the political spectrum in much of the world, and certainly in places like Australia, USA and Europe, is very far right. So you're actually choosing between two right wing parties, one of whom is extreme right and another slightly less so.
One of the central tenets of right wing philosophies is that rich people get richer. They dress it up a little differently, but that's the fundamental. The political debates we get these days are about how quickly and to how great an extent this can happen, and how much at the expense of poor people can it be (eg. how much can you get away with before they revolt, strike, or engage in other stubbornness).
All other discussion is off the table. If you try to represent an argument balancing the range of possible political systems, perhaps taking advantage of the good points of several, you get labelled an extremist. It's very difficult to get a discussion going, or throw ideas around. If you represent a genuine left of centre perspective, you are labelled as a loony or downright dangerous.
Thus, the terms "left" and "right" no longer have any useful meaning, as people might historically think of them. A more honest framing would be "degree of right wing extremism".I wish I had said it first. But the quote is from here, and I first found a reference to it here. It happens very rarely that I want to shut up and let somebody else be heard but this is just that kind of case.