Between March 22 and April 9, Sanders won six caucuses in Idaho, Utah, Alaska, Hawaii, Washington and Wyoming, as well as the Wisconsin primary, while Clinton won the Arizona primary.
Antara 22 Maret dan 9 April 2016, Sanders memenangi enam kaukus di Idaho, Utah, Alaska, Hawaii, Washington, dan Wyoming, serta pemilihan pendahuluan Wisconsin, sedangkan Clinton memenangi pemilihan pendahuluan Arizona.