By Justin Sink
Still 28 percent of Americans said they did not know who Paul was, and 38 percent said the same of Rubio. Moreover, four in 10 Hispanic voters said they did not know or did not have an opinion of Rubio.
For Democrats, former Secretary of State Hillary ClintonHillary Rodham ClintonTrump softens rhetoric in pitch to black voters Trump: Democrats are 'the party of slavery' Wasserman Schultz wins primary against Sanders-backed challenger MORE continues to be the prohibitive favorite to win the nomination were she to enter the race. Of those surveyed, 88 percent had a favorable impression of Clinton.