back for

back (someone) for (something)

To support someone in some pursuit, often election to an office. I'm backing Caroline for student council president—here, have a button!
See also: back, for
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

back someone for something

to support or endorse someone for something, such as a public office. We all back Tom for president. I am backing Jane for treasurer.
See also: back, for
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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References in classic literature ?
"I think that is good advice to follow," put in Tom, "for we do need our goods; and if we reached the settlement ourselves, we would have to send back for our things, with the uncertainty of getting them all."
She answered seriously: "I thought maybe you couldn't come back for me."
She opened the door of the drawing-room, and stood back for him to pass in, entering herself behind him.
The size of pipe the strong-back is intended to be used on is stenciled on the back for easy identification during a casualty.
To execute the Boot, the QB receives the snap and reverse-pivots out of the shotgun (the same as he would on the counter-trey), except that he now fakes the hand-off to the F back for a two-count while getting depth and width away from the fake.
She looks back for a moment as I open my door, but then quickly returns to her view of the stream.
The deal includes all of the delinquent tax receivables that existed as of May 31, 1994 and go back for nearly ten years.
When acute back pain occurs, the AAOS recommends lying on your back for 20 to 30 minutes and applying ice packs to reduce initial pain and swelling.