A new national poll released on the eve of the two major political party conventions indicates Democratic challenger Joe Biden with a smaller lead over President Trump than most other live telephone operator surveys show.

WHAT THE LATEST FOX NEWS POLL SHOWS IN THE WHITE HOUSE RACE

The ticket of Biden and Sen. Kamala Harris of California – whom the former vice president and presumptive Democratic nominee named as his running mate last week – tops the ticket of Trump and Vice President Mike Pence 50%-46% among registered voters in a CNN survey conducted August 12-15. The 4-point advantage for the Democratic ticket is right at the poll’s margin of error of plus or minus 4 percentage points.

Biden’s lead over the president in the CNN poll widens to 53%-46% among the nearly three-quarters of those questioned who said they’re extremely or very enthusiastic about voting this fall. But the former vice president’s edge of Trump shrinks to just 1 point – 49%-48% – among those polled who live in 15 general election battleground states.

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The CNN poll – which was released Sunday – questioned 987 registered voters nationwide using live telephone operators.