The issue of immigration looks set to spark a devastating by-election loss for Rishi Sunak as disgruntled voters in a Tory town look to punish the Prime Minister. Voters in Wellingborough, which have backed the Tories in every election since 2005, appear on the cusp of delivering a by-election blow by switching to both Labour and Reform UK. The situation will only heap more pressure on the Prime Minister on February 15 with a by-election bloodbath possible if voters switch en masse in Kingswood. GB News spoke to around a dozen voters in Wellingborough on Wednesday. Several claimed Sunak’s fail…