Our take: Before President Barack Obama's acceptance speech tonight, a reporter at The Washington Post scrutinizes Obama's frequent claims about taxes, health insurance and jobs only to find some discrepancies.

"The details of President Obama's acceptance speech at the Democratic National Convention on Thursday night are not known, but he's been road-testing various claims about his record — and GOP rival Mitt Romney — for months. Here are five dubious assertions that he frequently makes on the campaign trail.

"Our goal is to help voters understand the context of these claims as they watch the speech. We did a similar exercise last week for Mitt Romney. He used three of the five examples we highlighted and a variation of a fourth."