Image modified from Tony Rogers.

Bob Edwards Radio.com explores Rick Shenkman's new book, "Just How Stupid Are We?: Facing the Truth About the American Voter":

--Only 2 in 5 voters can name the three branches of the federal government.

--Only 1 in 7 can find Iraq on a map.

--Only 1 in 5 know that there are 100 federal senators.

And the most chilling...

--Nearly half (49%) of Americans think the President has the authority to suspend the Constitution.