You can opt-out at any time. Access your favorite topics in a personalized feed while you're on the go. Download the app Sign up to get the inside scoop on today’s biggest stories in markets, tech, and business — delivered daily. Read preview If McKay Coppins' biography of Sen. Mitt Romney is to be believed, Sen. Kyrsten Sinema of Arizona hasn’t been worried about staying in the Senate for quite some time. This story is