For example, a sample of 600 voters will have a larger margin of error – about 4 percentage points – than a sample of 1,000 voters, which has a margin of error of just over 3 percentage points.

In the current election cycle, many media reports about polls are not including information about the margin of error.

As Americans await election results, many are looking to the polls for clues. From the margins of error to methodology, here’s what to know about presidential polls.

In that year, some polls in Florida, for example, indicated that Hillary Clinton was just a couple of percentage points ahead of Trump. Journalists and the public largely – and incorrectly ...

For example, a poll conducted by InsiderAdvantage between October 14 and 15 showed Trump 2 points ahead among 800 likely voters—a lead within the poll's 3.7-point margin of error.