WASHINGTON — Billionaire businessman Donald Trump has strengthened his lead at the top of the USA TODAY/Suffolk University Poll while two other outsider candidates, Ben Carson and Carly Fiorina, have gained ground over rivals with electoral experience.

Jeb Bush, who two months ago was second to Trump in the USA TODAY survey, has tumbled to single digits and fifth place. The third-place finisher last time, Wisconsin Gov. Scott Walker, suspended his campaign entirely this month.

“Unfortunately, I’m leaning toward Trump, only because he’s a non-political figure,” says Ginger Mangam, 58, a customer-service representative from Little Rock, Ark., who was among those surveyed. Asked about his lack of electoral experience, she replies: “I don’t think it’s a problem; I think it’s a message.”

Read the article “Poll: Trump Still Top, Fiorina, Carson Next, Rubio Grabs #4 Spot” on usatoday.com.