(Updates with ABC-Washington Post poll starting in first paragraph. For more campaign news, see ELECT.)

 

Sept. 11 (Bloomberg) -- President Barack Obama gained a six percentage-point advantage over Mitt Romney among registered voters following the Democratic National Convention, according to a poll that also finds a virtual tie among those most likely to vote.

The president’s position in a match-up with the Republican nominee among all registered voters is his strongest since April in an ABC News/Washington Post poll, which found 50 percent supporting Obama and 44 percent backing Romney in the three days after the Democrats’ nominating convention in Charlotte, North Carolina.

A CNN survey conducted during the same three days found Obama holding a 52 percent to 46 percent advantage over Romney among likely voters. A CNN survey taken Aug. 31-Sept. 3, following the Republican National Convention in Tampa, Florida, had found the two men tied at 48 percent.