Black taxi tale a tall storey?

A viral election rumour, that may or may not be true, being spread on Black Taxi routes and gossip chains across Belfast:

Supposedly a large figure in republicanism was out canvassing for de Brún when he called at the door of the mother of a SF elected rep who sits at or near the big table in Stormont. Allegedly the mother chased him from the door with strong words and assured him there was no vote for SF there.

Fact? Fiction? Made me smile.

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