Pundits so far have been wrong.
here’s a poll
http://www.realclearpolitics.com/epolls/2016/president/mo/missouri_republican_presidential_primary-5605.html
That pollster had Trump ahead big in KS. He got crushed.
Of course, KS is a caucus and this is a primary.
In any event, I could see MO going either way.