Democratic nominee for President Hillary Clinton points when she delivers an address on day four of the Democratic National Convention at Wells Fargo Center in Philadelphia, Pennsylvania on July 28, 2016. Hillary Clinton claims the Democratic Party's nomination for president. Photo by Ray Stubblebine/UPI | License Photo

Republican presidential nominee Donald Trump, celebrates with running mate Indiana Governor Mike Pence, after delivering his speech at the Republican National Convention at Quicken Loans Arena in Cleveland, Ohio on July 21, 2016. The GOP ends their convention tonight with Donald Trump accepting the Republican nomination for president of the United States. Photo by Molly Riley/UPI | License Photo

WASHINGTON, Aug. 11 (UPI) -- The UPI/CVoter daily presidential tracking poll for Tuesday shows Hillary Clinton leading Donald Trump by 2.2 percentage points.

The online poll shows Clinton with 48.1 percent to Trump's 45.9 percent.


Tuesday's data reflect a 1.3 percentage point shift toward Trump from data collected a day earlier and a shift of 1.7 percentage points toward him over the course of seven days, the poll's full sample size.

The Trump rebound has largely happened over the past three days, when he stopped what had been a 10-day free fall in the poll, initially stabilizing his numbers and then gaining to put the race back about where it was before the conventions, albeit with far fewer undecided and third-party voters left to win over.

The UPI/CVoter online tracking poll surveys about 200 people each day, leading to a sample size of roughly 1,400 people during any seven-day span.

Because 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. 3 to Tuesday, when 1,452 registered voters were surveyed. Of them, 1,002 identified themselves as likely voters.