Three swing states show President Obama leading

A new poll by the New York Times found that Mr. Obama holds an advantage of 6 percentage points over Mr. Romney in Florida and Ohio. The president is stronger in Pennsylvania, leading by 11 percentage points. The margin of sampling of error is plus or minus three percentage points in each state. 

The New York Times, in collaboration with Quinnipiac and CBS News, is tracking the presidential contest in six states through polls over the next three months. In addition to Ohio, Florida and Pennsylvania, which have a combined 67 electoral votes, surveys will be taken in Colorado, Wisconsin and Virginia, which have 32 electoral votes. 

Four years ago, Mr. Obama won all six states. Mr. Romney is campaigning in each state, with his strategists seeing the efforts in Pennsylvania and Wisconsin as the most ambitious. Those two states, which have voted for the Democratic presidential candidate over the last two decades, are considered firewalls, and an erosion of support would signal trouble for the president. 

Still, more than half of voters in each state also say the administration’s actions are either slowly improving the economy or will, if given more time.