The magazine 'The New York Times' gave her a nearly 90% percent chance of winning the White House. By the middle of September, however, Hillary Clinton’s lead has narrowed significantly. As of September 26th, the New York Times’s campaign blog. Another magazine 'The Upshot' gave him 30% chance of winning.
According to the 'RealClearPolitics' average of recent polls, Trump and Clinton are in a statistical dead heat with Trump winning 44.3% of the polls and Clinton winning 46.6%.
Without a doubt, the convention boosted Trump. The first night's theme – "Make America Safe Again" – resonated in the polls and in the media after two tumultuous weeks that saw the killing of two African-American men in Louisiana and Minnesota and eight policemen in Dallas and Baton Rouge.