A bit of your meaning is unclear, so I want to add something:
If you are part of the half of Americans who voted for either of the two ruling parties, you voted for torture. The only people who haven't are those who don't vote, or who vote for (certain) third parties.
If you are part of the half of Americans who voted for either of the two ruling parties, you voted for torture. The only people who haven't are those who don't vote, or who vote for (certain) third parties.