I can’t believe he (Paul) would take any Republicans with him. Especially when there are so many fine, true, conservative, smaller government, less taxes, return education to local control, second amendment supporting and border securing Republicans that might get the nomination. No. Not with Rudy, Mitt, or Mike to vote for.
Probably not a large number overall. But the main thing to watch is not just the overall % Republican numbers for him but the % Republican voters for Paul in certain swing states - Ohio, Florida, etc. So, yes, this bozo could hurt us in a close contest.