Thirty-three years after Watergate

In June of 1972, five men were arrested breaking into the Democratic National Headquarters at the Watergate office complex in Washington, D.C. They were there to make repairs to electronic bugs they had planted previously.

In the months that followed, Washington Post reporters Bob Woodward and Carl Bernstein would eventually link the breakin to the White House while being fed inside information by a source identified only as "Deepthroat" named for pornstar Linda Lovelace. We now know that Deepthroat's true identity is W. Mark Felt, a high-ranking FBI official in the 70's.

The political dirty tricks of the 1972 election and the coverup in the aftermath would ultimately force Richard M. Nixon to resign the Presidency in the summer of 1974.

Questions: How big was Watergate, really? If it were to occur today, rather than in the early 70's, would it be enough to force a President to resign?