on-message
adverb
POLITICS ukussomeone who is on-message says things in public that show they agree with the ideas and decisions of their political party, the government, etc.:
be/keep/stay on-message The Labour leader urged MPs to stay on-message throughout the election campaign.
See also
off-message
on-message
adjective
POLITICS ukussaying things in public that show you agree with the ideas and decisions of your political party, the government, etc.:
They hire whichever "on-message" journalists and editors they wish.
See also
off-message