Lindsey Graham won his South Carolina Senate primary, and the win shows how much Republican politics now runs through Trump.

• Graham beat a more pro-Trump challenger but credited the win almost entirely to Trump's endorsement.
• His victory speech ranked Trump just behind God, drawing mockery for over-the-top flattery.
• It's part of a wider pattern of Republicans publicly competing to praise Trump.
• Turnout was small — around a quarter million votes in a state of under 6 million.
• Democrat Annie Andrews also won her primary, setting up a November race.

Outlook: Graham is favored to win reelection in November and says he'll keep backing Trump's agenda.