Democrat Lauren Arthur has won a state Senate seat in Missouri's 17th district, defeating her Republican opponent by 19-points in a district that went for Trump by 4-points (a 23-point swing).

Democrat Lauren Arthur has won a state Senate seat in Missouri's 17th district, defeating her Republican opponent by 19-points in a district that went for Trump by 4-points (a 23-point swing).

This is the 42nd red-to-blue flip of the election cycle. https://t.co/MUNBljYAnX

— Kyle Griffin (@kylegriffin1) June 6, 2018