Sen. Darline Graham Nordone‘s (R-SC) political future may rest with President Donald Trump’s endorsement after the senator stumbled during a special primary runoff debate against Rep. Ralph Norman (R-SC), intensifying questions about whether she is prepared for the job.

Graham Nordone, who was appointed to replace her brother Lindsey after his death in July, told debate moderators on Tuesday that she is “not that informed on national security” when she was asked if Taiwan and the South China Sea are national security issues for the United States.

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