John McCain's death roils rough-and-tumble Republican primary in Arizona

The office of Joe Arpaio is decorated with framed photographs of the former Maricopa county sheriff standing side-by-side with Donald Trump. A smaller-than-life cardboard cutout of the president can be found propped in a corner at campaign events for the former Arizona state senator Kelli Ward. For months, the three Republican senate candidates competed to prove their fealty to Trump.