MOTHER JONES: When it comes to pot, we’ve come a long way from the days of “I did not inhale.” Fifteen states (plus the District of Columbia) currently permit the use of marijuana for medicinal purposes, and according to a recent Pew survey, 45-percent of Americans say they’d support legalizing marijuana outright—a 29-point increase from just two decades ago. Cannabis is fast losing its political stigma, too: The GOP might march in lockstep on abortion and tax cuts, but when it comes to pot, things get a bit hazier. Some of the party’s presidential candidates have never touched the stuff; more than a few of them inhaled; one of them even got nabbed in a drug bust. In honor of 4/20, here’s a quick guide to where the GOP’s 2012 contenders stand on pot…MORE