India, July 22 -- As the dust settles on a high-stakes primary contest in the Grand Canyon State, political analysts and national strategists are parsing the tea leaves to answer a central question defining the path toward November: Who is slated for victory in the looming congressional and gubernatorial battles?

US Representative Andy Biggs, a stalwart conservative warrior and fierce ally of US President Trump, secured the Republican nomination for Arizona governor on Tuesday, decisively defeating fellow US Representative David Schweikert.

The Associated Press projected the victory, which immediately establishes one of the most polarised and intensely watched general election match-ups in the country, pitting Biggs against incumbent De...