O’Rourke gets 87 – 9 percent support from Democrats and 51 – 37 percent backing from independent voters, as Republicans go to Cruz 88 – 6 percent;

Men back Cruz 51 – 40 percent, while women go 47 percent for O’Rourke and 43 percent for Cruz;

Voters 18 to 34 years old go Democratic 50 – 34 percent, while voters over 65 years old go Republican 50 – 43 percent;

White voters back Cruz 59 – 34 percent, as O’Rourke leads 78 – 18 percent among black voters and 51 – 33 percent among Hispanic voters.