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Story highlights

Three national polls dropped Monday showing a statistical tie between Hillary Clinton and Donald Trump

Gary Johnson is polling well below the 15% threshold to be included in debates

(CNN) —  

A trio of national polls released ahead of the first presidential debate Monday all tell the same story: Hillary Clinton and Donald Trump are locked in an increasingly tight race.

In the latest survey from Bloomberg, Trump edges Clinton in a four-way race that includes third party candidates, 43%-41%. Quinnipiac University, meanwhile, showed a virtual tie with Clinton edging Trump by a single point, 44%-43%.

Each poll showed Libertarian Party nominee Gary Johnson polling at 8%, well below the 15% threshold he needed to qualify for Monday night’s debate in Hempstead, New York.

A third national poll released Monday produced more favorable numbers for Clinton, but still showed a race much closer than a month ago, when the former secretary of state appeared to be running away with the election.

The poll from Monmouth University showed Clinton leading Trump, 46%-42%, with Johnson once again grabbing 8%. A month ago, Monmouth showed Clinton leading Trump by seven.

The three surveys bring Trump to his best showing since the primaries in the CNN Poll of Polls, which calculates the average of the five most recent publicly released national polls. According to the latest average, which includes polls conducted September 16-25, Clinton leads Trump, 44%-42%, while Johnson and Green Party nominee Jill Stein claim the support of 8% and 2% respectively.

Bloomberg conducted its poll September 21-24 using phone interviews with 1,002 likely voters nationwide. It has a margin of error of 3.1 percentage points.

Quinnipiac conducted its poll September 22-25 using phone interviews with 1,115 likely voters. It has a margin of error of 2.9 percentage points.

Monmouth conducted its poll September 22-25 using phone interviews with 729 likely voters. It has a margin of error of 3.6 percentage points.

CNN’s Jennifer Agiesta contributed to this report.