Tory Sam Armstrong, chief of staff to South Thanet MP Craig Mackinlay, has been charged with two counts of rape and one of serious sexual assault.
The alleged rape took place at the Houses of Parliament last year.
The 23-year-old, from Danbury, Essex, will appear at City of Magistrates’ Court on March 31.
“Mr Mackinlay was made aware of an allegation against a member of his staff.”
A spokesperson for Mr Mackinlay
Mr Armstrong was a «political campainger» for the Conservative Party, according to his Linkedin page.
He has been been suspended as Tory MP Craig Mackinlay’s chief of staff since the allegations emerged.
Last year a spokesperson for Mr Mackinlay told The Independent: “On Friday morning Mr Mackinlay was made aware of an allegation against a member of his staff. Following a request made by the police and parliamentary services, he granted full access to his Westminster office.”
Mr Macinlay’s office was searched by police and sealed off as a potential crime scene.
A Metropolitan Police spokesman said: “Detectives from the sexual offences, exploitation and child abuse command are investigating an allegation of rape at the Houses of Parliament in the early hours of Friday 14 October.
“A 23-year-old man was arrested that same day on suspicion of rape. He has been bailed pending further inquires to a date in mid-January 2017.”