How will Trump campaign’s shake-up affect bid?

WASHINGTON (AP) — Donald Trump's decision to fire his embattled campaign manager less than a month before the Republican convention sent a powerful signal to weary GOP leaders that the billionaire businessman recognizes the increasingly dire state of his presidential campaign. Now, his party is looking for him to quickly implement other changes to mount a credible challenge to likely rival Hillary Clinton.
Trump's decision to oust Corey Lewandowski aims to put an end to the months of infighting that had roiled his unconventional campaign. And it signals bigger changes are underway. Lewandowski, a constant presence at his boss's side, had long resisted calls for Trump to adopt a more presidential tone and campaign operation, instead insisting the key to victory was to "Let Trump be Trump."