The phrase "a vacancy arise" is not correct in standard written English.
The correct form would be "a vacancy arises."
Example: "Whenever a vacancy arises in our department, we will notify all employees."
Alternatives: "a position opens" or "a job becomes available."
This may well remain the case this week for the parliamentary election and even the election for Majles-e Khobregan, the Experts Assembly, the body charged with selecting a supreme leader should a vacancy arise.
A middle-aged man asks the imam about the election due on Friday for the clerical body whose one real task is to choose Iran's supreme leader should a vacancy arise.
Speculation on the BBC about his successor immediately identified Boycott and Essex's Keith Fletcher as the leading candidates but in fact Bedser already had a plan in place, having asked the Middlesex secretary, Alan Burridge, on the Sunday of the Trent Bridge Test, to ask Brearley whether he would consider a short-term reappointment should a vacancy arise.
Judge Garland, the chief judge of the United States Court of Appeals for the District of Columbia Circuit, is a former Justice Department official and an appointee of President Bill Clinton who is considered a potential nominee to the Supreme Court should a vacancy arise in President Obama's second term.
The pressure on manager Chris Hughton increased after their 7-0 defeat at Manchester City - and should a vacancy arise, Mackay's success at Cardiff may just make him a perfect fit at a club where he is still a popular figure.
Should a vacancy arise in the General Assembly, the Governor also fills that vacancy, though the Governor must choose from among the recommendations of the local party organization to which the person leaving the vacancy belonged.
