Vice President Kamala Harris is narrowly leading former President Donald Trump in a national presidential poll released Tuesday, Reuters/Ipsos poll found.

Reuters reports that the poll compares with a marginal two-point deficit Biden faced against Trump in last week’s poll before his Sunday exit from the race.

The new poll was conducted on Monday and Tuesday, and came after both the Republican National Convention, where Trump on Thursday, formally accepted the nomination and Biden’s announcement on Sunday that he was leaving the race and endorsing Harris.

Harris, whose campaign says she has secured the Democratic nomination, led Trump 44% to 42% in the national poll, a difference within the 3-percentage-point margin of error.

Harris and Trump were tied at 44% in a July 15-16 poll, and Trump led by one percentage point in a July 1-2 poll, both within the same margin of error.

Reuters noted that while nationwide surveys give important signals of Americans support for political candidates, a handful of competitive states typically tilt the balance in the U.S.

Electoral College ultimately decides who wins a presidential election.