Hillary Clinton and Donald Trump
Sullivan/Getyy Images/Vucci/AP
Hillary Clinton and Donald Trump
Now playing
00:45
Polls show Clinton leading in three swing states
AirTag
Apple
AirTag
Now playing
01:17
See AirTag, Apple's new device for tracking your lost stuff
ABC/Fremantle North America/19 Entertainment
Now playing
01:27
Katy Perry consoles 'Idol' contestant after he flubs lyric
NASA/JPL
Now playing
01:29
Watch the Ingenuity helicopter's first flight on Mars
Marvel Entertainment
Now playing
01:13
Marvel introduces first Asian superhero in new trailer
Consumer Product Safety Commission
Now playing
01:08
Video shows child getting caught under Peloton treadmill
CNN
Now playing
02:56
Watch Anderson Cooper belly laugh with Cheri Oteri
Brooke Baldwin last show goodbye CNN newsroom vpx_00000217.png
CNN
Brooke Baldwin last show goodbye CNN newsroom vpx_00000217.png
Now playing
03:56
'Get a little uncomfortable': See Brooke Baldwin's last words on air
US Navy
Now playing
01:28
Pentagon confirms UFO video is real, taken by Navy pilot
Now playing
01:24
How Kyra Sedgwick got the cops called on Tom Cruise
Fancy Feast/Purina
Now playing
01:06
Cat food company makes a cookbook ... for humans
Google Earth's new timelapse feature
Google
Google Earth's new timelapse feature
Now playing
01:09
Google Earth's new Timelapse feature shows 40 years of climate change in just seconds
Twitter | @brady9dream
Now playing
02:10
Pet owners pitch their pups to be dog brew's 'Chief Tasting Officer'
FOX/"The Masked Singer"
Now playing
01:23
'The Masked Singer' reveals identity of The Orca
LONDON, ENGLAND - DECEMBER 07:  A visual representation of the digital Cryptocurrency, Bitcoin on December 07, 2017 in London, England. Cryptocurrencies including Bitcoin, Ethereum, and Lightcoin have seen unprecedented growth in 2017, despite remaining extremely volatile. While digital currencies across the board have divided opinion between financial institutions, and now have a market cap of around 175 Billion USD, the crypto sector coninues to grow, as it continues to see wider mainstreem adoption. The price of one Bitcoin passed 15,000 USD across many exchanges today taking it higher than previous all time highs.  (Photo by Dan Kitwood/Getty Images)
Dan Kitwood/Getty Images
LONDON, ENGLAND - DECEMBER 07: A visual representation of the digital Cryptocurrency, Bitcoin on December 07, 2017 in London, England. Cryptocurrencies including Bitcoin, Ethereum, and Lightcoin have seen unprecedented growth in 2017, despite remaining extremely volatile. While digital currencies across the board have divided opinion between financial institutions, and now have a market cap of around 175 Billion USD, the crypto sector coninues to grow, as it continues to see wider mainstreem adoption. The price of one Bitcoin passed 15,000 USD across many exchanges today taking it higher than previous all time highs. (Photo by Dan Kitwood/Getty Images)
Now playing
03:10
Bitcoin has an energy problem
The new all-electric Mercedes-EQS
Mercedes-Benz AG
The new all-electric Mercedes-EQS
Now playing
01:05
See the new all-electric EQS luxury sedan from Mercedes

Story highlights

4 percent of voters remain undecided, the poll found

Clinton leads in the state's "generally decisive" I-4 corridor

(CNN) —  

Hillary Clinton has single-digit leads over Donald Trump in Florida and New Hampshire, according to a new polls conducted after the first presidential debate.

A Mason-Dixon poll of likely voters in Florida found Clinton leading Trump 46% to 42%, just outside of the poll’s margin of error. Libertarian candidate Gary Johnson drew 7% support, ahead of Green Party candidate Jill Stein at 1%. Four percent said they remain undecided.

Clinton’s edge in the state is powered by her support among women and nonwhite voters, and she performs better with Democrats (83%) than Trump does with Republicans (77%). Trump is buoyed by strong support among men and white voters.

The poll also broke down each candidate’s support by geography, which showed Clinton with an advantage over Trump in the southeast portion of the state, where she leads 58% to 29%. Trump was strongest in the state’s southwest, leading there 51% to 36%.

But in the “generally decisive” I-4 corridor, according to the poll, Clinton has a key advantage. She is leading 47% to 40% in the Tampa Bay region, which the Mason-Dixon poll identifies as a “swing area,” while Trump’s advantage in Republican-leaning central Florida is a slim 46% to 43%.

The Mason-Dixon poll was conducted between September 27 and 29, entirely after the first presidential debate which took place on Monday. It surveyed 820 registered voters, all of whom reported they were likely to vote, and has a margin of error of +/- 3.5 points.

Clinton has 7-point edge in New Hampshire post-debate

Clinton is ahead of Trump by 7 points in New Hampshire, according to another new poll taken after the first presidential debate.

The WBUR poll, released Friday, found Clinton with 42% support to Trump’s 35%, while Johnson draws a substantial 13% in the four-way race.

Four out of five likely voters in New Hampshire said they watched the debate between Clinton and Trump – 59% of those said that Clinton won, compared to 19% who gave Trump the win. While just over half said that the debate “made no difference” in how they would vote, 27% said the debate made them more likely to vote for Clinton, ahead of the 13% of said it would make them more inclined to vote for Trump.

The WBUR poll also surveyed voters on whether they thought each candidate was “fit to be president.” Forty-nine percent said that Clinton is while 46% said no, and 33% said yes for Donald Trump compared to 62% saying no.

Both candidates, though, are still disliked by a majority of voters. Fifty-one percent say they have a negative view of Clinton, and 61% say the same about Trump.

The WBUR poll was conducted between September 27 and 29, and surveyed 502 likely voters. It has a margin of error of +/- 4.4 points.