SPRINGFIELD — After spending a full day working at the Capitol, it isn’t uncommon for Rep. Christian Mitchell to drive to Chicago for law school classes at Loyola University Chicago, then drive back to Springfield the next morning to do it all again.“Being a legislator is a job that demands a lot of your time and attention, and that’s not even counting the time you spend reading bills, taking conference calls, going to events. Technically it’s a part-time job, but it is pretty much full-time …