Star-struck Mainers can stop McDreaming. Grey’s Anatomy star Patrick Dempsey announced that he will not be running for the Senate — as speculation swirls about who could replace accused rapist Dem nominee Graham Platner. In an op-ed titled ‘Why I’m not running for US Senate’ published in the Portland Press Herald Wednesday, the 60-year-old Hollywood actor unpacks his conflicting feelings about whether he would ever run for one of the top jobs in his home state of Maine. Grey’s Anatomy star Patrick Dempsey announced that he will not be running for the Senate — as speculation swirls about who could replace accused rapist Dem nominee Graham Platner. FOX Image Collection via Getty Images Platner has so far refused to step down as Maine’s Democratic Senate nominee after he was accused of rate b