I think that would exclude every country on earth then! :-)
We cannot expect perfection, but at least a few ground rules, like: Respect freedom of speech, right to worship, have a system of laws, the right to own property, dont engage in torture or holding political prisoners, and have a representative Republican form of Govt (Was corected on that "Democratic" is a general term these days we use to mean Republics, as there are no nations that are direct Democracies. It's a Republic that works, not Democracy, but the latter term is "popular" with the Demos :-) )
Maybe 2 levels. The first level gets you in, make it easy enough that only the ral outlaw states get booted, like North Korea etc; the second level gives you voting rights. You need some real representative Govt. sorry, Mugabe, Saudis, Pakistan, Syria, Cuba, etc. etc.
Democracy is popular with (and necessary to) the demon-crats because they need majority rule to gain (and retain) power, most of which is obtained by robbing Peter to pay Paul. They would be shackled if they were forced to adhere to the constitution (as would most "republicans"). Under our constutional form of government, any power not specifically authorized to the federal government by the constitution is forbidden. To gain new power the federal government must submit an amendment to the states, and 3/4's of the state legislatures must authorize the new amendment. Any other acquisition of power by the federal government is illegal usurpation. The demon-crats know this well; but by stacking the courts with liberal judicial activists (who ignore the constitution in their rulings), the demon-crats are able to create unconstitutional law rather easily.