The survey had a margin of error of plus or minus 2.8 percentage points.

NPR: SKorea's Gay Film Maker In News Over Wedding Plans

The institute said that its early forecasts had a margin of error of 0.1-0.2 percentage points.

BBC: UK economic growth outlook still weak, NIESR says

The poll had a margin of error of plus or minus 3 percentage points.

CNN: Afghanistan haunted by ghost of Vietnam

This question has a margin of error of plus or minus 4 percentage points.

CNN: Bush's approval ratings slide to new low

The poll had a margin of error of plus or minus 2 percentage points.

CNN: Obama's ahead, polls say, but will the lead last?

That survey had a margin of error of plus or minus 4 percentage points.

CNN: poll has Bush ahead in Florida

That survey had a margin of error of plus or minus 3.5 percentage points.

CNN: poll has Bush ahead in Florida

All those questions had a margin of error of plus or minus 3 percentage points.

CNN: Poll: Kerry loses ground to Bush

The question had a margin of error of plus or minus 3 percentage points.

CNN: Poll: Kerry loses ground to Bush

The poll has a margin of error of plus or minus 3 percentage points.

NPR: Changed Minds & Demographics In Gay Marriage Shift

The poll has a margin of error of plus or minus 5 percentage points.

CNN: Poll: Clinton recaptures lead in New Hampshire

The New York poll has a margin of error of plus or minus 4.5 percentage points.

WSJ: Soda Proposal Gets a Sour Poll Reaction

The national poll has a margin of error of plus or minus 3 percentage points.

WSJ: Soda Proposal Gets a Sour Poll Reaction

The poll has a margin of error of plus or minus 4 percentage points.

CNN: Battleground roundup: Can Obama win in the South?

The network says it has a margin of error of plus or minus 3.4%.

CNN: Half of U.S. households own at least one Apple product

Those findings had a margin of error of plus or minus 3 percentage points.

CNN: Bush approval hits new lows in poll

The results had a margin of error of plus or minus 3 percentage points.

CNN: Obama squeaks past McCain in polls

The poll has a margin of error of plus or minus 3.1 percentage points.

CNN: Campaign: Obama's VP choice to be announced Saturday

The poll had a margin of error of plus or minus three percentage points.

CNN: GOP lawmakers want special session on energy crisis

The poll had a margin of error of plus or minus 3.5 percentage points.

CNN: Poll: 'Sharp reversal' for Obama with Latino voters

The question on job approval had a margin of error of plus or minus 4.5 percentage points.

CNN: Poll: Kerry leads among minority voters

The survey includes 740 Democrats with a margin of error of plus or minus 3.6 percentage points.

WSJ: Weiner gets 15 percent of Dem vote in NYC poll

The GOP sample of 306 likely caucus participants had a margin of error of 6 percentage points.

CNN: Bradley gains Iowa support

The sample of 303 likely Democratic caucus voters has a margin of error of 6 percentage points.

CNN: Bradley gains Iowa support

The results from the Petraeus question had a margin of error of plus or minus 4.5 percentage points.

CNN: Opinions divided on Petraeus, his message

The trick is to be no higher in risk than you can handle, including a margin of error.

FORBES: Earn More with Index Funds in 2013 and Beyond

The sampling error varied from question to question, but none had a margin of error exceeding 4.5 percentage points.

CNN: Poll: U.S. can win war, but won't

The poll was conducted March 7-22 and carries a margin of error of plus or minus 2 percentage points.

CNN: Obama camp: Clinton trying to 'distract attention'

It has a margin of error of plus or minus 3 percentage points.

CNN: Kids on mountain

That poll was conducted October 19-21 and has a margin of error of plus or minus 4 percentage points.

CNN: Obama takes swipe at McCain adviser's health care comment