Trump is taking on Democratic nominee Joe Biden in November. Mohammad Javad Zarif did, however, acknowledge, the incumbent appeared to have seen his support decline in recent months. In a live interview with an Iranian journalist on Instagram, Mr Zarif explained: “The biggest mistake in human sciences is to predict, especially in fluid and grave conditions.
“But allow me to venture a prediction that Mr Trump’s re-election chances are still more than 50%.
“But Mr Trump has a 30-35% base that has not moved and, as long as this base does not move, there is still a chance of his re-election.”
In recent weeks, Trump has been overtaken by Mr Biden in several polls and the former vice-President is now the bookies favourite.
Last year, Trump pulled the US out of the Obama-era Iran nuclear deal.
Washington reimposed sanctions on the Iranian economy, whilst Tehran began scaling back commitments made in the agreement.
Earlier this month, Trump told Iranian leaders they were wrong if they thought he was going to lose the election.
He tweeted: “Don’t wait until after U.S. Election to make the Big deal.
“I’m going to win.
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Iran has claimed the requests are based on “fabricated information”.
They also accused the United States and Israel of attempting “exert pressure on the agency”.
The Democrats are also the favourites to win a majority in the House of Representatives in November.
The Republicans lost control of the lower chamber in the 2018 elections.
According to Oddschecker, the Republicans remain the favourite to win the Senate elections, but their odds are shortening.
Elections to the upper house are staggered with a third of Senators standing for reelection every two years.
In addition to 33 seats up for election as regular elections, two Republican senators are standing in special elections to finish the term of Senators they were appointed to replace by State Governors.
Thus, a total of 23 Republican seats are for re-election and 12 Democrat seats.
Senate Majority Leader Mitch McConnell, a Kentucky Republican is considered to have a safe seat but due to his low approval ratings and the Democratic candidate Amy McGrath, a former Marine fighter pilot, raising a substantial amount of funds, some commentators have suggested it could be a race to watch.