@oristarA,
oristarA wrote:4: Supposed there are only 100 members (senators) in the Senate, now vote more liberally. Well, how to calculate the percentage?
Actually, 100 is exactly how many there really are.
50 states, and 2 senators from each state.
I'm not sure if this answers your question, but:
For the person with the most conservative voting record, they would say 0% of the other senators voted more conservatively than that person, and 100% of the other senators voted more liberally than that person.
For the person with the most liberal voting record, they would say 0% of the other senators voted more liberally than that person, and 100% of the other Senators voted more conservatively than that person.
If a senator had 50% of the other senators voting more liberally, and 50% of the other senators voting more conservatively, that senator might be considered a moderate.