So basically, Carson had four Evangelical voters in each Iowa precinct (give or take) — and they all switched their votes to Cruz — and this just happened to add up to the same number that separated Cruz and Trump?
Do we have some evidence showing there were four Carson voters per precinct who switched to Cruz?
Why would it be assumed that any or all switched votes went to Cruz.... and not to Huckabee, or Rubio, or Santorum? Or to Trump? Or to any other candidate?
Maybe there should be a start by finding ONE Carson supporter who switched to Cruz because they heard of a tweet.