Outside groups are already spending more than $5 million in hopes of unseating GOP Rep. Thomas Massie of Kentucky in a May primary after President Trump called for his defeat. So far, federal campaign finance records show that anti-Massie forces have dominated much of the outside spending picture in the Kentucky contest where the congressman is facing a pro-Trump challenge from Ed Gallrein, whose campaign website describes him as a farmer who has also served in the U.S. Navy. Spending disclosures show that a Super PAC linked to the Republican Jewish Coalition has directed more than $2.8 million towards the contest since late February, while the group MAGA KY has spent around $2.7 million this cycle. Since he arrived in Congress back in 2012, the Libertarian-minded Massie has taken lonely political stands on Capitol Hill, including voting against spending on the Iron Dome missile defense system for Israel, which has put him at odds with members of his own party.…