Poll: Obama retains edge over McCain

PRINCETON, N.J., Aug. 6 (UPI) -- Democratic U.S. presidential contender Sen. Barack Obama has a 4-percentage point lead over likely Republican rival Sen. John McCain, a Gallup Poll indicates.

Obama, D-Ill., held a 47 percent-to-43 percent edge over McCain, R-Ariz., in voter preference, Gallup Poll Daily tracking results released Tuesday indicate. Results showed Obama enjoyed a bump just after his trip to the Middle East and Europe, then slipped into a tie with McCain before returning to what had been the norm most of the summer of maintaining a narrow lead.

Pollsters at the Princeton, N.J., polling firm said more movement could be expected in the coming weeks as both major party presidential candidates announce their running mates and the nominating conventions begin.

The nationwide Gallup Poll Daily tracking survey includes interviews of at least 1,000 adults each day during 2008.

Results are based on data from from 2,674 adults polled Saturday through Tuesday. The margin of sampling error is plus or minus 2 percentage points.