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Donald Trump 's approval rating has slipped below 50 per cent in more than a third of the states that voted for him in last year's election.
A majority of people in 11 Republican-voting states believe he is performing poorly, according to polls carried out by Gallup since the President's inauguration.
Less than half of people in 33 states nationwide think he is doing a good job, the research found.
Those include Texas and Indiana, where Mr Trump comfortably beat Hillary Clinton in November's election, as well as states where he achieved slimmer margins of victory, such as Arizona and North Carolina.
He was given a 40 per cent average approval rating by the 81,000 Americans polled by Gallup between his inauguration and June 30.
The President's worst rating was 26 per cent in Vermont, followed by 29 per cent in Massachusetts. Six in 10 people surveyed in West Virginia and 59 per cent in North Dakota said he was doing a good job, his best ratings.
Mr Trump polled 46 per cent of the nationwide vote in the 2016 election, winning in 30 states.
Donald Trump's first 100 days: in cartoonsShow all 33 1 /33Donald Trump's first 100 days: in cartoons Donald Trump's first 100 days: in cartoons Donald Trump's first 100 days in office were marred by a string of scandals, many of which caught the eye of the Independent's cartoonists
Donald Trump's first 100 days: in cartoons Trump's first 100 days have seen him aggressively ramp up tensions with his nuclear rivals in North Korea
Donald Trump's first 100 days: in cartoons Mr Trump has warned of a "major, major conflict" with the pariah nation lead by Kim Jong Un
Donald Trump's first 100 days: in cartoons Mr Trump dropped the "mother of all bombs" on alleged ISIS-linked militants in Afghanistan, amid an escalation of US military intervention around the globe
Donald Trump's first 100 days: in cartoons Mr Trump has been accused of falling short of the standards set by his predecessors in the Oval Office, including Franklin D Roosevelt
Donald Trump's first 100 days: in cartoons The tycoon's ascension to the White House came at a time when the balance of power is shifting away from Western nations like those in the G7 group
Donald Trump's first 100 days: in cartoons Western politicians, including the British Conservative party, have been accused of falling in line behind Mr Trump's proposals
Donald Trump's first 100 days: in cartoons Brexit is seen to have weakened Britain, reducing still further any political will to resist American leadership
Donald Trump's first 100 days: in cartoons Mr Trump's leadership has been marked by sudden and unexpected shifts in global policy
Donald Trump's first 100 days: in cartoons Trump's controversial missile strike on Syria, which killed several citizens, was seen by some analysts as an attempt to distract from his policy elsewhere
Donald Trump's first 100 days: in cartoons The President has also spent a large majority of his weekends golfing, rather than attending to matters of state
Donald Trump's first 100 days: in cartoons Though free of gaffes, a visit from Chinese president Xi Jinping spotlighted trade tensions between the two states
Donald Trump's first 100 days: in cartoons One major and unexpected setback came when Mr Trump's Healthcare Bill was struck down by members of his own party
Donald Trump's first 100 days: in cartoons Mr Trump has been a figure of fun in the media, with his approval at record lows
Donald Trump's first 100 days: in cartoons A string of revelations about Mr Trump's financial indiscretions did not mar his surge to the White House
Donald Trump's first 100 days: in cartoons Outgoing President Barack Obama was accused of wiretapping Trump Tower by his successor in America's highest office
Donald Trump's first 100 days: in cartoons The alleged involvement of Russian intelligence operatives in securing Mr Trump the presidency prompted harsh criticism
Donald Trump's first 100 days: in cartoons The explosive resignation of Security Adviser Michael Flynn, who lied about his links to the Russian ambassador, was just one scandal to hit the President
Donald Trump's first 100 days: in cartoons Many scandals, such as the accusation Barack Obama was implicated in phone-hacking, first broke on Mr Trump's Twitter feed
Donald Trump's first 100 days: in cartoons Donald Trump's election provoked mass protests in the UK, with millions signing a petition to ban him from the country
Donald Trump's first 100 days: in cartoons Donald Trump cited a non-existent terror attack in Sweden during a campaign rally
Donald Trump's first 100 days: in cartoons Donald Trump stands accused of stoking regional tensions in Eastern Asia
Donald Trump's first 100 days: in cartoons North Korea has launched a number of failed nuclear tests since Mr Trump took power
Donald Trump's first 100 days: in cartoons Theresa May formally rejected the petition calling for Mr Trump to be banned from the UK
Donald Trump's first 100 days: in cartoons When Mr Trump's initial so-called Muslim ban was struck down by a federal justice, the President mocked the 69-year-old as a "ridiculous", "so-called judge"
Donald Trump's first 100 days: in cartoons A week after his inauguration, Theresa May met with Mr Trump at the White House
Donald Trump's first 100 days: in cartoons Donald Trump's first days in office were marked by a hasty attempt to follow through on many of his campaign promises, including the so-called Muslim ban
Donald Trump's first 100 days: in cartoons Donald Trump's decision to ban citizens of many majority-Muslim countries from the US sparked mass protests
Donald Trump's first 100 days: in cartoons Revelations about Donald Trump's sexual improprieties were not enough to keep him from being elected President
Donald Trump's first 100 days: in cartoons British PM Theresa May was criticised by many in the press for cosying up to the new President
Donald Trump's first 100 days: in cartoons One of Mr Trump's top aides, Kelly Anne Conway, was mocked for describing mistruths as "alternative facts"
Donald Trump's first 100 days: in cartoons British PM Theresa May was quick to demonstrate that her political aims did not hugely differ from Mr Trump's
Donald Trump's first 100 days: in cartoons Donald Trump's inauguration, on 20 January 2017, sparked protests both at home and abroad
His first six months in the White House have been dogged by controversies, including allegations of Russian meddling in the election. He has also struggled to push through key policy pledges, such as the repeal of ObamaCare.
Mr Trump had the worst six-month approval rating of any US President since surveys began, a poll for the Washington Post and ABC News found earlier this month.
He later insisted the 36 per cent rating was "not bad at this time", while also claiming the survey was "just about the most inaccurate poll".
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