Del. Code tit. 3, § 10042

This chapter shall apply to harness horse races upon which wagering or betting is conducted in accordance with subchapter IV of this chapter. Racing under this chapter shall be limited to harness horse racing or harness horse races. No part of this chapter shall be construed to apply to the racing of horses on the flat or running races; provided, however, that simulcasts of the racing of horses on the flat or running races or harness horse races which are displayed within the enclosure of any harness horse race meeting shall constitute harness horse racing within said enclosure.