The presidential race remains close.
According to a recent survey by the conservative Civitas Institute, presumptive Republican nominee John McCain had 43 percent support, Democrat Barack Obama had 40 percent and Libertarian Bob Barr had two percent. Fifteen percent were undecided.
That puts McCain's lead within the margin of error. Recent polls by Rasmussen Reports, Survey USA and Public Policy Polling have shown a close race, with McCain barely ahead.
"This month we've had slight tightening along with an increase in the number of undecided voters over last month," said executive director Francis DeLuca.
The live-operator survey of 800 likely voters was conducted July 14-16 by TelOpinion Research of Alexandria, Va. The margin of error is plus or minus 4.2 percentage points.
