Should candidates live local to the constituency that want to represent?

The candidate for the Labour party in a Perthshire constituency lives and is a councillor in a town 500 miles away .Why ? Jo Swinson was did the same thing flew in from Bath for surgeries(rarely) and wasn't a regular in the community.
Should this be allowed or should we at least expect our politicians to know the area they hope to serve and understand the concerns of the people living there?
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