Republican presidential nominee Donald Trump posted a two-point lead over his Democratic rival Hillary Clinton, according to a Reuters/Ipsos opinion poll released on Tuesday, the first time he has been ahead since early May.

Trump's gains came as he accepted his party's nomination to the Nov. 8 ballot at the four-day Republican National Convention in Cleveland last week, and as Clinton's nomination in Philadelphia this week was marred by party divisions and the resignation of a top party official.

The July 22-26 poll found that 39 percent of likely voters supported Trump, 37 percent supported Clinton and 24 percent would vote for neither. The poll had a credibility interval of 4 percentage points, meaning that the two candidates should be considered about even in support.