[tenger]

Once again the devil is in the details:

"The CNN/ORC poll was conducted September 17-19 and surveyed 1,006 adult Americans, including 924 registered voters -- 444 of whom are Republicans and independents who lean toward the GOP. The margin of error with the Republican results is plus or minus 4.5 percentage points."

[Dave W]

Independents are allowed to vote in about half of republican primaries. That is why they are included. In other states, democrats are allowed to vote in the republican primary, too. A republican only poll is not representative of who will vote. Thought you may like to know.