INDIANAPOLIS (AP) — Republican Ted Cruz faces a high-stakes test for his slumping presidential campaign in Tuesday's Indiana primary, one of the last opportunities for the Texas senator to halt Donald Trump's stunning march toward the GOP nomination. Cruz has spent the past week camped out in Indiana, securing the support of the state's governor and announcing retired technology executive Carly Fiorina as his running mate. Trump devoted more time to campaigning in Indiana than he has to most other states, underscoring his eagerness to put his Republican rival away and shift his attention toward Democratic front-runner Hillary Clinton. [...] Republican primary voters have stuck with the billionaire businessman, handing him victories in every region of the country, including a string of six straight wins on the East Coast. Clinton's team has started deploying staff to states that will be crucial in November and is also raising money for the fall campaign. A showdown between Clinton and Trump would pit one of Democrats' most popular and highly-regarded figures against a first-time political candidate who is deeply divisive within his own party.