have a say in

1. have the say . Be in command, as in The general has the say over which troops will be sent . [Early 1800s]

2. Also, have a voice in . Have the right or power to influence or make a decision about something. For example, I want to have a say in this matter , or Citizens want to have a voice in their local government . [c. 1600]

3. have one's say . Express one's views, as in As soon as I've had my say I'll sit down . [Late 1600s]