One thing I have always noticed about politicians is this: For almost anyone in elective office, hypocrisy is like heroin. It’s so addictive that it’s nearly impossible to resist it. I was reminded of that when I heard the news that Linda Schrenko, the former state school superintendent who had been behind bars since 2006, was being transferred to a halfway house as she prepared to finish her federal prison sentence for embezzlement later this year.