Error bars illustrate the margin of error for a survey estimate by showing how precise that estimate is. Here are some answers to common questions that might help you better understand charts with ...

In just about any discussion of a poll about the very close presidential race between Vice President Kamala Harris and former President Donald Trump, you’ll hear ...

In just about any discussion of a poll about the very close presidential race between Vice President Kamala Harris and former President Donald Trump, you'll hear the ...

Less than two weeks until Election Day, CNBC’s latest national poll finds a margin-of-error presidential contest between Republican Donald Trump and Democrat Kamala ...

Conducting a poll isn’t an exact science. The process is susceptible to lots of common problems and baked-in biases — more than just the “margin of error.” By ...

In just about any discussion of a poll about the very close presidential race between Vice President Kamala Harris and former President Donald Trump, you’ll hear ...

President Donald Trump’s approval rating declined one point in a Reuters/Ipsos poll released Tuesday—hours after Trump claimed he has the “highest poll numbers [he’s] ever had”—keeping his rating ...