In some areas there's a large concentration of foreign nationals living at taxpayers expense.So you've no real complaint if a party wins in one area due to a higher-than-average percentage of foreign nationals?
How do you know they're foreign nationals and not British? Or is just your assumption?
Just like you wouldn't remark that a certain party always wins in other areas because the houses are posh, or they hire a gardener, etc?
They vote for the party giving them max handouts: Labour.
Of course there are indigenous people sucking blood from taxpayers, and their Labour vote adds up to that of the foreign leeches.
