Unlike previous generations, British and American Millenials (aged 26-41) do not become more conservative as they age - on the contrary
Similar patterns are evident in Britain, where millennials are more economically leftwing than Gen-Xers and boomers were at the same age

Also

UK millennials and their “Gen Z” younger cousins will probably cast more votes than boomers in the next general election.

So... we will see :)