A lot depends on how one views the facts.
Note that Zell Miller doubled the beds available in Georgia prisons and filled them . Bill Clinton did much the same for the Feds.
This was a popular Democratic initiative at the time , or bipartisan if you prefer.
And in the Huffington Post they point out that the crime rate was falling while this prison filling was happening.
But they do not consider the relationship direct, how do they fail to make this connection?