List of Republicans who opposed the Donald Trump 2016 presidential campaign

This article is part of a series about Donald Trump
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This is a list of Republicans and conservatives who announced their opposition to the election of Donald Trump, the 2016 Republican Party nominee and eventual winner of the election, as the President of the United States. It also includes former Republicans who left the party due to their opposition to Trump and as well as Republicans who endorsed a different candidate. It includes Republican presidential primary election candidates that announced opposition to Trump as the nominee. Some of the Republicans on this list threw their support to Trump after he won the presidential election, while many of them continue to oppose Trump. Offices listed are those held at the time of the 2016 election.