Florida Rep. Alan Grayson marries candidate running to take over his congressional seat
Rep. Alan Grayson (D-FL) appears on 'All In' on July 9, 2015. (MSNBC)

ORLANDO, Fla. — The crowded field to succeed U.S. Rep. Alan Grayson in Congress now includes a Grayson. Grayson, D-Fla., on Tuesday revealed his marriage to Dena Minning, a medical doctor and biochemist who is one of several Democratic candidates for Grayson's soon-to-be-vacated District 9 seat. Grayson is running for the U.S. Senate. The couple were…