Demonstrate for - Idioms by The Free Dictionary
demonstrate for someone or something
to make a public show in favor of someone or something. We will all demonstrate for Walter's candidacy. A number of supporters demonstrated for the mayor.
References in periodicals archive
Using this reporter, they were able to demonstrate for
the first time in vivo that methotrexate induces apoptosis in the inflamed synovial tissue of the joints.
Pace will demonstrate for
the first time a prototype of its tvConnect technology.