BREAKING NEWS: Donald J. Trump’s campaign has signaled strongly to Republicans in Washington that he will pick Mike Pence, the governor of Indiana, as his running mate, though Republicans caution the party’s mercurial presidential candidate may still backtrack on his apparent choice.

Mr. Trump’s advisers have told national Republican officials that they are preparing to make an announcement with Mr. Pence, according to three people with knowledge of the conversations, who were not authorized to discuss them publicly. His campaign has said that it will unveil a running mate for Mr. Trump in New York on Friday. READ MORE