President Obama and Mitt Romney are cancelling scheduled campaign events due to Hurricane Sandy.

Romney, the GOP nominee for president, will join up with his running mate, Rep. Paul RyanPaul Davis RyanKrystal Ball: GOP tax cut is 'opiate of the massively privileged' Top GOP lawmaker: Tax cuts will lower projected deficit GOP super PAC seizes on Ellison abuse allegations in ads targeting Dems MORE (R-Wis.), who is on a two-day bus tour through Ohio that will take him through some of the state’s smaller cities and towns, according to a campaign official. 

The GOP nominee had been scheduled to campaign on Sunday in Haymarket, in the vote-rich region of Northern Virginia, and in Virginia's capital, Richmond. On Friday, Romney called off a Sunday event in Virginia Beach, Va.

Late Saturday, the White House announced that Obama would cancel appearances in Northern Virginia on Monday and in Colorado Springs, Colo., on Tuesday due to the storm. Obama will return to the White House following an event in Youngstown, Ohio, on Monday to monitor Hurricane Sandy.

Vice President Joe BidenJoseph (Joe) Robinette BidenBiden endorses first Latina attorney general candidate in Arizona Bernie Sanders socialism moves to Democratic mainstream Biden: Aretha Franklin was 'part of the soul of the civil rights movement' MORE has also cancelled his own Virginia Beach event, scheduled for Saturday. Obama’s campaign said the move was made to ensure that local authorities could fully concentrate on the looming storm.

Speaking at a campaign stop in Lynchburg, Va., on Saturday, Biden said Hurricane Sandy prevented his son, Beau Biden, Delaware's attorney general and a member of the National Guard, from making the trip.

"He was sitting in Air Force Two as we were about to take off, and ... he called and said 'Dad, the governor has just called up the National Guard. I’m going home.'”

Hurricane Sandy, which is expected to collide with a powerful cold front, is expected to hit the Eastern U.S. as early as Sunday evening. Governors and elected officials up and down the Eastern Seaboard have declared states of emergency and urged residents to be careful. 

--This report was originally posted at 2:37 and last updated at 10:21 p.m.