The online poll shows Clinton with to 48.94 to Trump's 46.11. Among respondents, 4.95 percent selected "other." "Others" in the poll are defined as respondents who decline to pick either Clinton or Trump.
One day earlier, the Democratic nominee led by 2.71 percentage points over the Republican nominee.
Over the course of seven days, the poll's full sample size, Clinton has gained 1.3 percentage points while Trump has lost 2.2.
The UPI/CVoter online tracking poll surveys about 200 people each day, leading to a sample size of about 1,400 people during any seven-day period.
Since the poll is conducted online and individuals self-select to participate, a margin of error cannot be calculated. The poll has a credibility interval of 3 percentage points. This seven-day span includes data collected from Aug. 24-30 when 1,699 registered voters were surveyed. Of them, 1,162 identified themselves as likely voters.