Endorsement

en·dorse·ment

: the act or process of endorsing

: something that is written in the process of endorsing

: SANCTION, APPROVAL

: en·dorse

: to inscribe (one's signature)

: to make over to another by inscribing one's name on the document

: to approve openly <endorse  an idea>; especially : to express support or approval of

publicly and definitely <endorse a mayoral candidate>

synonym see APPROVE