Poll: Trump up huge in Southern Super Tuesday states
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They are followed by Ben Carson with 8 percent and Gov. John Kasich (R-Ohio) with 6 percent.
Trump also defeats the two senators in hypothetical head-to-head match-ups. When pitted against Cruz, the billionaire business mogul leads 49 to 40 percent. Rubio comes slightly closer, trailing Trump 48 to 44 percent.
Still, the poll shows that there is still some wiggle room among the voters, with 53 percent saying they are still open to voting for someone aside from their current first-choice candidate.
The survey showed slim prospects for potential third-party candidate former New York Mayor Michael Bloomberg. Fifty-six percent say they view him unfavorably, while just 18 percent view him positively.
The poll surveyed more than 1,200 likely Republican primary voters in Alabama, Arkansas, Georgia, Oklahoma, Tennessee, Texas and Virginia. It has a margin of error of 2.8 percent.