Yeah, the “margin of error” term makes me cringe because so many people misunderstand it, including the talking heads on TV. Its probably better not to list it with polls.
The problem is that poll results are presented as one figure instead of a x% confidence interval. Better polls have a higher percentage and smaller interval. By using one number the media is dishonest and seeks to sway people, rather than present truth. They can do this because most people don’t understand statistics and sampling.