I've done it. I joined the Conservative Party a few months ago (hence the name change for this post).
This is after two decades of Labour/left-wing affiliation. I used to work for a Labour MP and was heavily involved in certain left-wing projects that I don't want to mention for fear of outing myself.
It was hard, and I reflected upon it for months. I spoke at length to an old school friend of mine, who understood what I was considering.
The moment came when a civic colleague of mine, female, who I admire tremendously for her "get things done" attitude and her passion about education revealed she was a member of the party and was gender critical, as were a number of the women in the party at a local level. The relief I felt was extraordinary; it wasn't just me shouting into the wind.
Then they asked me formally to join.
It may be the wrong decision. I may regret it in the future. But there comes a point where you have to plant your flag in the sand, and I realised that, because of certain other issues I wanted to investigate, I needed really to join a party again -- and I just could not consider Labour or the Lib Dems as a possibility because of their attitude to safeguarding, womens' rights, and ethnic and religious inclusion, as revealed through the ill-thought out implications of their gender policies.
I could never stand behind a policy that disenfranchises women from civic space.
And I know I have ostracised myself from my former fellow travellers. I am not a Tory at heart; I'm old Methodist Labour.
But that political world no longer exists, so I must try to do what I feel is right under an umbrella that doesn't not fit.