Via NBC News:
Former Florida Gov. Jeb Bush and Florida Sen. Marco Rubio lead the pack of Republicans seeking the GOP nomination for president, according to a new poll from NBC News and the Wall Street Journal. Asked which Republican hopeful would be their first choice to win the party’s primary, 23 percent of GOP primary voters chose Bush. An additional 14 percent picked him as a second choice. Eighteen percent of GOP primary voters said that they favored Rubio most, while another 23 percent selected the Florida senator as their second choice for the Republican nod. Rubio posted particularly impressive numbers when GOP primary voters were asked which potential candidates they could definitely see themselves supporting. Seventy-four percent said they could imagine backing him, while only 15 percent said they could not imagine supporting him (net +59).
Poll breakdown here.