Mark Sanford Will Challenge President Trump In Republican Primary

Mark Sanford announced his candidacy for the Republican presidential primary, challenging President Trump. He aims to spark a national debate on debt and spending. The South Carolina GOP decided to cancel its 2020 primary to save $1.2 million, citing no legitimate challengers to Trump's record. Sanford joins Bill Weld and Joe Walsh as challengers.

What was the financial impact of the decision made by the South Carolina Republican Party?

Who were the other two Republicans mentioned as challengers to President Trump?