The poll was conducted Nov. 29 through Dec. 5 and had a margin of error of 3.5 percentage points.
Poll: Rubio topping the veepstakes list
“The Republican Party is trending older and whiter and more male,” said Peter Woolley, the poll's director. “Clearly some voters are looking for a little more contrast. Some know they will have to appeal to a broader group of people to win the White House.”