Be in favour of something/of doing something - Idioms by The Free Dictionary
be in favour of something/of doing something
be in favor of (something)
To be in support of something. Everyone I've talked to is in favor of the new dress code, so hopefully management will endorse it. As a traditionalist, my father was never in favor of the changes they made to the town.
be (all) in favour of something/of doing something support or approve an idea, a course of action, etc: As far as Joe’s suggestion about saving money is concerned, I’m all in favour of it. ♢ Some people are in favour of restoring the death penalty for major crimes. ♢ All those in favour, raise their hands.