TRENTON, N.J. (AP) — Billboards calling on Republican Gov. Chris Christie to denounce presidential candidate Donald Trump are popping up across New Jersey.

Bridges Over Politics for New Jersey, a new nonprofit advocacy group, said Friday it has spent six figures for about a dozen billboards and digital ads across the state.

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The billboards are in Bergen, Hudson and Mercer counties. Christie endorsed Trump for president after ending his own campaign.

The group is headed by Aaron Keyak, a one-time aide to former Democratic U.S. Rep. Steve Rothman. The group’s donors are not public.

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One of the ads shows Trump at a lectern with Christie behind him. The text asks Christie to “stand up to racism and bigotry.”

Christie’s office declined to comment.

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