United States House of Representatives from January 2015 until January 2017, including 435 representatives from 50 states and 6 non-voting delegates from 5 territories and the District of Columbia.
Republican (red): 246 (246 reps + 1 del)
Democratic (blue): 193 (188 reps + 5 dels)

Vacant (gray): 1 (Rep. John Boehner resigned in October 2015, and his seat has not yet been filled.
Own work
Kingofthedead