I'd rather know what a candidate's alignment is, than their political party.
It would be more informative if candidates had to tell their alignment, rather than their political party.
I highly doubt there are many Lawful Good politicians, if we're being honest.
That chart is inaccurate according to my understanding of good and evil.
For one, there's no such thing as neutral, you're either on the side of good or you aren't. There's no middle ground. And that's not just my opinion, it's an ancient spiritual principle. One of evil's tricks is to convince people that they can be neutral. You can't, it just a ruse to get you to see yourself as something other than good. They know it's up or down.
Also, chaos is bad, order is good. Order can be informal, it can exist without external control (even anarchy has rules, they're just not enforced by a governing authority), but order is a necessary component of a peaceful and productive society, and that will never change.
In practical terms, being good means obeying the non-aggression principle. You don't have the right to initiate force against another person, or to interfere with their property. Good people obey that principle, bad people don't, whether they're a politician or anyone else.
Perhaps your understanding of the chart is flawed.
Maybe this will help:
http://easydamus.com/alignment.html
That would be interesting information.