Let's look at how well this supports the claims you've made, then. Firstly: that "Income inequality grows greater because the rich are taxed the least which is directly caused by democratic policy of taxing the rich the least".
So, your source identifies 10 states with "the most regressive tax systems". I'll put an (R) or a (D) next to each one to show which party their governors belong to. Washington (D), Florida (R), Texas (R), South Dakota (R), Nevada (R), Tennessee (R), Pennsylvania (D), Illinois (D), Oklahoma (R), Wyoming (R).
So, that's seven Republican-run states and three Democratic-run states.
Secondly: your claim that "a fully democratic run state taxes the rich the least in all of America."
According to your own source, the state that taxes the top 1% the least is... Nevada (R). Second and third are Florida (R) and South Dakota (R). Washington comes in at about sixth.
Your source also identifies 10 states it says have a "more equitable", progressive tax system, putting more of the burden on higher earners and less on lower earners. They are...
California (D), DC (no governor, but Democratic mayor), Vermont (R), Delaware (D), Minnesota (D), New Jersey (D), Maine (D), New York (D), Montana (R), Maryland (D).
Huh! Eight Democratic-run states and two Republican!
So, uhrm, looks like you're full of it.