How did Douglas hyde become president?

Douglas Hyde became President of Ireland in 1938 and remained until his term of office finished in 1945

The 4th of May 1938.

He was the president from 1938 to 1945.

Vice President

Either they get elected to the presidency, after the current president's term in office is up (George H.W. Bush was elected after Ronald Reagan), they take over after the death of the president...