Poll: Trump leads Rubio by 7 in Florida
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A Washington Post/Univision survey released Thursday found Trump taking 38 percent support, and Rubio at 31 percent.
 
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The poll shows a closer race than other recent surveys. Trump leads the state by 17 points in the RealClearPolitics polling average, and two polls released this week showed him with a 23-point lead.
 
The Washington Post/Univision survey was completed in full before Rubio suffered a string of devastating defeats in Kansas, Kentucky, Louisiana and Maine on Saturday, and then failed to win a single delegate in contests in Michigan, Mississippi, Idaho and Hawaii on Tuesday.
 
The Florida senator has been forced to defend the viability of his campaign in recent days, amid speculation that he would drop out before his home-state primary.
 
The Rubio campaign is adamant he's in it for the long haul, and insist that taking all 99 of Florida's delegates will be a game-changer.
 
In the race for the 1,237 delegates needed to secure the GOP nomination, Trump leads with 458 delegates, followed by Cruz at 359, Rubio at 151 and Kasich at 54.
 
A majority of Florida Republicans — 59 percent — say that if Rubio does not win his home state, he should drop out.
 
Rubio is still viewed positively in Florida, with 62 percent viewing him favorably. But Trump is not far behind, with a 57 percent approval rating.
 
The Washington Post/Univision survey of 450 likely Republican primary voters in Florida was conducted between March 2 and March 5 and has a 5.5 percentage point margin of error.