Granny's are statistical more likely to vote Tory so maybe this is smarter than we think...

a pixelated image of a little girl in a red jacket looking up

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Pensioners have been very well served by the last government for that reason. Right to the point of OAP Oyster cards being acceptable voter ID but not student ones. Their income/benefits have increased whilst the rest of the country has been targeted. It's their turn now I guess.