For the record...
...the Seattle Times is a Republican paper so attributing the persistence of this story to the "liberal media" is a bunch of hooey.
McGavick disclosed his drunk driving arrest long after he had announced his candidacy and after the candidate's filing period for the primary election had closed. He knew it would come out sooner or later, but he made sure he had fully sewn up his chances of his party's nomination before volunteering the information.