READ the poll. I gave you the linke
Again, this is from the link your posted:
"The poll was compiled through phone interviews Nov. 1-13, and surveyed 979 registered Republicans and 277 registered independents. Of those polled, 377 (30 percent) stated that they definitely or probably would attend the Republican caucus Jan. 3."
I'll even break it down and say it's in paragraph 7 of your own hyperlink.