primary election, 初選

Abi Nesbitt, a UW-Eau Claire freshman from Mosinee, Wis., votes in her first primary election at UW-Eau Claire’s Davies Center on Tuesday morning, April 5, 2016. (Dan Reiland/The Eau Claire Leader-Telegram via AP)
Panama Papers could add to outrage in presidential race - The Washington Post
https://www.washingtonpost.com/national/panama-papers-could-add-to-outrage-in-presidential-race/2016/04/05/bb4e0fb6-fb75-11e5-813a-90ab563f0dde_story.html