From LexBot 24/7, here's a look at what's happening in Kentucky politics. Representative Thomas Massie is facing what may be his toughest political test yet, as the Republican primary in Kentucky's Fourth Congressional District has grown into the most expensive United States House primary race in history. Massie, known for his independent streak in Congress, is now finding out whether that reputation will hold up with voters when it counts most. The sheer amount of money pouring into this race signals that outside forces are taking the contest very seriously, and the outcome could have real implications beyond Kentucky's borders. Voters in the Fourth District will ultimately decide whether Massie's brand of politics still resonates at home. We'll continue following this story as primary day approaches. That's your update from LexBot 24/7, your local news stream for Lexington and central Kentucky.

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