flip-flopper

noun

1. informal.
   a person who makes a complete change of policy, opinion, etc

Example Sentences

This has led to accusations from her opponents that she is a flip-flopper.

From BBC

President George W. Bush, the Republican, rolled out advertisements in the spring of 2004 that portrayed his opponent, Senator John Kerry of Massachusetts, as a flip-flopper on national security issues.

From New York Times

Mr. DeSantis’ political pals are firing back with TV ads warning that Ms. Haley is a flip-flopper on key issues.

From Washington Times

Former President Donald Trump is aiming to take some steam out of Nikki Haley’s surging campaign in New Hampshire by casting her as a flip-flopper on taxes.

From Washington Times

In 2004, Bush won reelection despite the growing unpopularity of the war in Iraq by portraying Kerry as a flip-flopper while pro-Bush groups ran a series of ads raising questions about Kerry’s record as a swift boat commander in Vietnam.

From Washington Times