Read this.  Worth the Pulitzer Prize.

And, oh yeah.  This kind of fraud is one that a voter id law would do nothing to prevent:

The Cook County Republican Party arranged for Mr. Mullen to work undercover in the Chicago Election Board City Hall office to see if he could find out what the Democrats were doing.

“I would find excuses to nose through all kinds of files, trying to find out how elections got stolen,” he told me. When he discovered primary election ballot applications signed all in the same hand with the same pen, he said he realized election judges “were waiting until the polls closed and taking names of people who didn’t vote and then voting for them.”

To get the ballot applications out of City Hall, he says, “I had to stuff them down the front of my pants and go to the Tribune. They’d have a bunch of photographers lined up to take photos of each document and then I’d stuff them back down my pants and return them. Then we knocked on doors and told people we thought their names had been forged.” The voters confirmed the forgeries and the paper won a Pulitzer for the reporting in 1973.