Republican presidential candidate Donald Trump will make his first Loudoun campaign stop tomorrow, with an event planned at Briar Woods High School in Ashburn.
The event is scheduled for 11 a.m.
The campaign has opened online registration for free tickets.
Democrat Hillary Clinton already has made one Loudoun campaign stop, with a visit to a Stone Ridge coffee house in May.
During the past two presidential campaigns, candidates from both parties have made Loudoun—a critical swing county in a swing state—a frequent stop. Barack Obama, Michelle Obama, Mitt Romney, Ann Romney, Joe Biden and Sarah Palin all have held rallies in the county.