Poll date appears to be 9/20/15. No link to actual poll.
9/22/15, "Poll: Trump Leads, Clinton Under 50," Morning Consult, Reid Wilson
Trump 32
Carson 12
Bush 11
Fiorina 6
Cruz 5
Rubio 5
"Trump takes 32 percent of the vote among self-identified Republicans and Republican-leaning independents, according to a new Morning Consult tracking poll — far ahead of retired neurosurgeon Ben Carson’s 12 percent and former Florida Gov. Jeb Bush’s 11 percent. Fiorina finishes in fourth position, at 6 percent, just ahead of Sens. Marco Rubio (Fla.) and Ted Cruz (Texas), who clock in with 5 percent each....
The Morning Consult survey polled 4,033 registered voters for an overall margin of error of plus or minus 2 percentage points. A subsample of 1,551 self-identified Republicans and Republican-leaning independents carries a margin of error of plus or minus 2.5 percentage points, while a subsample of 1,761 Democrats and Democratic-leaning independents carries a margin of error of plus or minus 2.3 percentage points." image from Morning Consult
....................................................
Added: Above Morning Consult poll giving Trump 20 point lead matches twenty point lead found by 9/20/15 national Zogby Poll, conducted September 18-19, showing Trump at 33%:
.................
9/20/15, "Zogby Poll: Trump Widens Lead After GOP Debate," Forbes, John Zogby
..............
