Grimes endorses Booker in Democratic Senate race...
LOUISVILLE, Ky. (AP) — Democrat Charles Booker won a key endorsement Tuesday from former statewide officeholder Alison Lundergan Grimes in a new sign of momentum for his upstart bid for his party’s nomination to challenge Republican Senate leader Mitch McConnell in the fall. Grimes, who lost a bitter, big-spending Senate race against McConnell in 2014, tweeted her endorsement of Booker, saying: “Together, let’s elect a new generation of leadership in KY!” Grimes, a former two-term Kentucky secretary of state,...