I'd say it is the other way around. -- Support for the Tories/Conservatives has collapsed to the point where they are 4th or even 5th place! Reform have benefitted most from this shift. [1]-[4]

The left wing is seeing Labour voters shift to the Lib Dems, Greens, Jeremy Corbin's new party, and Reform.

[1] https://www.electoralcalculus.co.uk/services_lsdm.html (April)

[2] https://www.electoralcalculus.co.uk/blogs/ec_vipoll_20250625... (June)

[3] https://www.electoralcalculus.co.uk/prediction_main.html (July)

[4] https://www.electoralcalculus.co.uk/blogs/ec_rrose_20250731.... (August)