Pew story here.
You’re supposed to take the quiz yourself before reading the article.
My results, on a test that, in my humble opinion, a capuchin monkey should be able to pass, never mind anyone who considers themselves entitled to vote on issues that affect all of us:

Eight percent? Eight Percent???
Something I said quite a long time ago:
“It is in the interest of our political leadership to generate an American population that will vote for you if you give them a cookie.”
Success.
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Clearly the results divulge a truth. WE ARE SCREWED
- By the way: Don't knock capuchin monkeys. They're a bit smarter than your average - - - . ...
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I thought some of the questions were phrased a bit oddly, and that someone doing a quick read would get ...
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Funny, I interpreted the exact same data in a totally different way.
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Did you read the whole news story?
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Yes. Why, Is that supposed to make a difference in my conclusion?
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No, you concluded this was why people voted Republican.  The results and demographics seem to indicate otherwise.
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I don't see it.
This is what I saw.
"The partisan gaps in knowledge are at least partly a consequence of demographic ...
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Remarkable.
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I think you spend an awful lot of effort trying to change the way I think. Think about that.
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Have you ever thought about why I bother?
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We've always known you were a partisan propagandist Tom.  We've told you as much. 
But I have to admit, ...
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Ah, that's a load of horseapples.
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Tom, your "pick the group"
gotcha is not really all that extreme.  That's really middle of the road stuff.  ...
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"Middle of the road?"
No wonder you think I'm in deep right field.  Check your GPS.
 
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"Middle of the road?"
No wonder you think I'm in deep right field.  Check your GPS.
 
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Tom, your "pick the group"
gotcha is not really all that extreme.  That's really middle of the road stuff.  ...
 
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Ah, that's a load of horseapples.
 
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We've always known you were a partisan propagandist Tom.  We've told you as much. 
But I have to admit, ...
 
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Have you ever thought about why I bother?
 
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I think you spend an awful lot of effort trying to change the way I think. Think about that.
 
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Remarkable.
 
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I don't see it.
This is what I saw.
"The partisan gaps in knowledge are at least partly a consequence of demographic ...
 
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No, you concluded this was why people voted Republican.  The results and demographics seem to indicate otherwise.
 
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Yes. Why, Is that supposed to make a difference in my conclusion?
 
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Did you read the whole news story?
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Same here Tom