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All eyes on Blackpool and Tees Valley as Sunak comes under pressure in the north

The two seats used to be solid Labour constituencies - part of the so-called Labour 'Red Wall' - until Boris Johnson persuaded them to vote Conservative.

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Rishi Sunak's northern 'Blue Wall' faces a major political stress test this week with a by-election in Blackpool and a mayoral vote in Tees Valley.
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