Fascinating — Avi Rubin, the Johns Hopkins researcher who exposed the security vulnerabilities of the Diebold electronic voting machine by dissecting its source code, was an election judge in Baltimore County yesterday in a precinct that used the voting machines, and has written up his experience. It’s not full of shocking news or exposition of malfeasance, but rather a firsthand look at how electronic voting worked, and where the more practical problems could be come November.