be on message

To be or remain true to the official or agreed upon view, plan, or ideology. We just feel like our spokesperson has to be on message with our organization's strong religious beliefs. The candidate is usually very on message during these interviews, rarely stepping outside of a set of carefully crafted responses, so it was odd to see him go off on such a tangent. If you want to get paid by the company, you better be on message in your video about their product.