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Philip Rucker: Trump is 'undisputedly the leader of the Republican Party'

06:07

NBC News national political reporter, Sahil Kapur, and Washington Post senior Washington correspondent and co-author of “I Alone Can Fix It," Philip Rucker, share their latest reporting on former President Donald Trump's efforts to undermine the 2020 election. Rucker tells Yasmin Vossoughian that Trump has made the issue a "litmus test" for Republicans.