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US Republican presidential candidate Donald Trump does a sound check on the final day of the Republican National Convention at the Quicken Loans Arena in Cleveland on July 21, 2016.
Donald Trump will need to deliver the speech of his life Thursday, outlining his vision for America and seeking to salvage a fractious Republican convention after his chief rival declined to endorse him in his run for the presidency.
US Republican presidential candidate Donald Trump does a sound check on the final day of the Republican National Convention at the Quicken Loans Arena in Cleveland on July 21, 2016.
Donald Trump will need to deliver the speech of his life Thursday, outlining his vision for America and seeking to salvage a fractious Republican convention after his chief rival declined to endorse him in his run for the presidency.

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Trump to use teleprompter to give RNC speech tonight

Sen. Ted Cruz is not backing down from his RNC speech despite the crowd's reaction. CNN's Jim Acosta reports.

Trump to use teleprompter to give RNC speech tonight

Sen. Ted Cruz is not backing down from his RNC speech despite the crowd's reaction. CNN's Jim Acosta reports.