In your original post you stated:
This was based upon a Washington Post article (To avoid removal, Trump needs senators representing only 7 percent of the country to support him). When you read the article it is obvious that the author bases his 7 percent calculation on the assumption that the 34 Senators from these 17 states would all vote to acquit. However, when you consider the party affiliations of the Senators (D 13, R 19, I 2) representing these states it is clear that this would be highly unlikely. When you consider party affiliation, and assume a straight party line vote, it would require the votes from Senators representing 13.82 percent of the population to acquit.
If you want to extend this line of reasoning, that all Senator, regardless of party affiliation would vote to convict, it would require the votes of Senators representing 30.57 percent of the population to convict. How is this any more representative?
What else would you call it?