A new poll showed on Sunday the approval rating for the US President Donald Trump sits at 36 per cent after a steady decline since springtime.

The approval rating for Trump, who approaches six months in office, is lower than that of any of his predecessors in 70 years, Xinhua reported.

Results of the poll, carried out by the US Broadcaster ABC News and newspaper Washington Post, come amid a wider perceptions of a decline in US global influence, a much-delayed Republican agenda, and unfolding stories about alleged Russia’s links to the 2016 Trump campaign.

The fresh poll indicated the overall approval rating for Trump has dropped to 36 per cent from 42 per cent since April, the lowest for any president in polling history since Harry Truman at the six-month mark.

Figures showed that the last US president as unpopular at the same mark was Gerald Ford, with a 39 per cent of approval rating in February, 1975.

Of those surveyed, 58 per cent expressed disapproval of Trump’s job performance, among which 48 per cent said they “disapprove strongly.”

The poll also showed that 48 percent of the respondents see the US leadership in the world as weaker since Trump was inaugurated in January, with only 27 per cent believing it to be stronger.

Two thirds said they do not trust Trump to negotiate with other world leaders on the US behalf.

Just 28 per cent of those polled said they think Trump is making significant progress toward his goals, while 55 per cent think otherwise.

The US intelligence community alleged that Russia meddled in the US presidential race last year and connections existed between the Russian government and the Trump campaign, which the Kremlin has denied.

The ABC-Post poll finds a majority, about 60 per cent, of Americans said they believe Russia tried to meddle in the 2016 US presidential election, while about 44 per cent think Trump benefited from those attempts.

On a health care bill supported by Republicans in a bid to overhaul the country’s existing system, half of those surveyed said they prefer the current one, and only 24 per cent favoured the Trump-proposed legislation.

The poll was conducted between from July 10 to July 13 among a random sample of over 1,000 adults being surveyed over the phone, with a margin error of 3.5 points.