After placing as high as second in the national polls for the GOP presidential primaries, Gov. Scott Walker (R-Wis.) announced on Sept. 21 that he was leaving the race. In July, Walker polled better in Iowa than Donald Trump, but his support began to fade and, after a mere 71 days, Walker burned up. On his way out the door, Walker claimed he was stepping aside so the party could unite against Trump’s campaign.Along with other explanations, political analysts pointed out that Walker’s focus on organized labor failed to gain traction among conservative voters. Walker’s claim that he was the candidate best suited to deal with Islamic terrorists because he defeated union leaders in Wisconsin simply lacked resonance. Trump’s appeal, in contrast, tapped into deep discontent among the Republican base and fueled its incendiary temper. The strategic gap between Walker and Trump has implications for the American labor movement.