Conn. Agencies Regs. § 12-574-B37
(a) Placing and money distribution.
(1) Unless otherwise provided in the conditions, all purses shall be distributed on the dash basis with the money awarded according to a horse's position in each separate dash or heat of the race.
(2) Dashes. Unless otherwise specified in the conditions, the money distribution in dashes shall be 45 percent, 25 percent, 15 percent, 10 percent, and 5 percent. In early closing races, late closing races or added money events, if there are less than five (5) starters, the remaining premium shall go to the race winner unless the conditions call for a different distribution. In overnight events if there are less than five (5) starters the premium for the positions for which there are no starters may be retained by the track.