I wouldn't consider 'might could' grammatical.
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Nona The BritI wouldn't consider 'might could' grammatical.If it's not of your variant, I understand, but it is grammatical for some other native speakers.
InchoateknowledgeHello MilkyIn which variant/s?
To my personal knowledge, double modal constructions are not grammatical.
A modal may not follow another modal.
Alienvoord"I might could be persuaded to try that."http://www.randomhouse.com/wotd/index.pperl?date=20001120
Which dialect is this grammatical in?
they carry little if any social stigma within the South and are used by speakers of all social classes and educational levels—even in formal instances like political addresses.This is untrue. The use of paired modals in the South (the land of my birth) remains the province of the poorly educated and the jocular.