A New York Times Upshot/Siena College poll surveying Florida voters found Republican nominee Donald Trump leads Hillary Clinton amongst all white voters, 51 percent to 30 percent, giving him a critical boost in the biggest, most diverse of swing states.

Trump and Clinton are tied in a four-way race that includes Libertarian and Green Party candidates Gary Johnson and Jill Stein at 43 percent among likely voters. In a head-to-head matchup, Clinton leads Trump only 41 percent to 40 percent.

Both candidates have high unfavorable ratings: Among all likely voters polled, 53 percent and 55 percent have unfavorable views of Clinton and Trump, respectively. Sixty percent of male voters view Clinton unfavorably, while 59 percent of female voters view Trump unfavorably. Forty-four percent of male voters approve of Trump, while only 32 percent approve of Clinton. Female voters are evenly split on Clinton, with 47 percent viewing her favorably and unfavorably.

Among white likely voters, 65 percent hold an unfavorable view of Clinton, and 30 hold a favorable one. For Trump, those numbers shift to 50 percent favorable and 45 percent unfavorable. Among Hispanics, 33 percent view Clinton unfavorably, and 59 percent approve. Twenty percent view Trump favorably, while 73 percent view him unfavorably.

Regarding building a wall on the southern border, 51 percent of whites support it, while 44 percent oppose. Among nonwhites, a border wall is deeply unpopular: Only 23 of black voters and 27 percent of Hispanic voters support the proposal. Sixty-six percent of black voters and 63 percent of Hispanics oppose it. Fifty percent of all Florida voters oppose it, while 43 support it.

Fifty-one percent of whites want the U.S. government to deport illegal aliens, while only 28 percent of blacks and 29 percent of Hispanics agree. Florida voters are split on the issue, with 44 percent supporting the lawful deportation of illegal aliens and 43 opposing it.

Fifty percent of whites oppose passing more federal gun control legislation; 67 percent of black voters and 63 percent of Hispanics support it. Altogether, 49 percent support stricter federal controls on firearms.

Florida has 29 electoral votes, and President Barack Obama beat Mitt Romney by less than a percentage point in 2012, 50 percent to 49.1 percent.

Pollsters collected responses from 867 likely Florida voters from September 10 to September 14. The poll has a margin of error of plus or minus 3.3 percent.