When it comes to economics, the answer to that question is probably "yes." Click here to read an interesting article about a study done by Zogby and analyzed by a professor at George Mason University.
The survey asked nearly 5,000 American adults a series of economcs questions, then asked for the respondent's political affiliation. You can read the story for the details, but the gist of it is this: Those who identify themselves as liberals were far more likely to get the answer wrong than were conservatives and liberterians.
Of course, that's no surprise to anyone with much common sense. When you have a core belief (as the Obama administration does) that you can take money away from people in taxes, then give them a percentage of it back as "stimulus" and magically fix the economy, it's clear you were sleeping through that Macro Economics 101 class.