So who won the clown car debate?
And no, the top 3 candidates do not pull 75% of the republican vote. The non whacko republican voters really haven't made up their mind and it's showing up in the polling data. The top 3 are just pulling the whacko birds. In the previous cycles, the whacko birds show up early to dominate the polls but are later drowned out by the serious voters.
Take a look at France these past 2 weeks. In the first contest, the far right had big gains but lost them all in the second round this past weekend because the serious voters came out. This might be the norm for right wing voters in various countries, who knows.