have something on your side
have (someone or something) on (one's) side
To have someone or something that supports or has the ability to aid one or one's idea, plan, intention, etc. You have all of us on your side, Jerry. We just want to see this issue resolved as quickly and easily as possible. If she's going to win this case, she'll need to have one heck of a legal team on her side.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
have something on your ˈsidehave something as an advantage that will make it more likely that you will achieve something: She may not win this year, but she does have youth on her side.
Farlex Partner Idioms Dictionary © Farlex 2017