"it may be because leadership and proper evaluation of the evidence are a bit thin on the ground in the world of politics..."
Yep.
"join parties and get elected as councillors, MSPs and MPs. Or go back to shouting into our broom cupboards."
Well yes, but -
Apart from the tedium of that, even if everyone on here joined parties (perhaps easier if it was the same party?) and got elected it would still be next to impossible to do just/mostly cycling because of all the other things.
It would be nice to stand on a manifesto saying 'we are going to sort out cycling first because we believe that everyone will benefit and it will save the NHS money'.
But - it seems - there aren't many votes in that.
I remember many years ago when I was involved in (campaigning for) improving housing, I met a new civil servant who was determined to rise to the top and 'sort things out'. No idea what happened to her, maybe she achieved her goals, or was dashed aside by the policy changes which resulted in housing being more about commodities than places to live.
Of course if you/we can guarantee to get into the policy making positions (preferable very soon) it could be different.
So much 'policy' is made by those with a vested interest - of one sort or another. Lobby groups, 'think tanks', 'institutes' etc.
Spokes and PoP are 'lobby groups' - but I meant ones with money to pay for Lobbyists, provide 'researchers' etc.
It's hard to know/define how much has been achieved by Spokes, Sustrans, CTC etc. over many years. Now British Cycling/Chris Boardman have joined in.
All good - but not good enough (that is not a criticism of any of those).
Keep going? Hope for the unexpected (Boris has made a difference - helped by LCC and individual campaigners)? Give up?
Personally I favour the latter. Been doing it too long, need some new people/ideas/expertise/commitment.
If you're up for it, maybe help PoP - it's made a bit of a difference.