The exception is a good one: although the "clean [or low] emissions target" for the national electricity market recommended by the Finkel report is far from perfect as the chief means by which the Turnbull government seeks to reduce our carbon emissions in line with our Paris commitment, Bill Shorten has indicated that the opposition would be open to supporting a "well-constructed LET" in the Senate.
There aren't many issues more important than filling the policy vacuum left by Tony Abbott's abolition of the carbon tax three years ago. And, in the process, greatly assisting efforts to fix the ailing electricity market, reducing the risk of blackouts and further price rises.
Everyone bar the Coalition's crazy backbench climate-change deniers knows coal's days are numbered, which is why both sides of the electricity industry – fossil fuels and renewables – are desperate for greater certainty about how the government plans to manage the transition.
But it's not just that the government needs to make up its mind. It's also that the alternative government isn't planning to change the Coalition's arrangements.
This explains why pretty much all the adults involved have agreed that a CET or LET is the best way forward, given the aforementioned crazies' rejection of anything more sensible.
And why Labor deserves a tick for seeking bipartisanship by moving from its own, better policy for an "emissions intensity scheme" and accepting a LET, provided it isn't too badly compromised.
Now it's up to Malcolm Turnbull to get his troops' agreement to a "well-constructed" LET – which won't be easy.
Sorry, but it occurs to me to wonder whether, should Turnbull fail, Labor isn't positioning itself to claim the moral high ground on both climate change and a workable electricity market.
I wonder about Labor's motives because, on most other policy issues, Shorten is putting his electoral ambitions well ahead of the nation's interest in good policy and effective governance.
All in the name of more nearly perfect policy, naturally.
It's hard to avoid the suspicion that, though he wants to be seen as positive and co-operative, his true motive is to pay the Coalition back for the way Abbott tried to destabilise and neuter the Gillard government and to keep alive the policy differences – on health, education and budget fairness – that brought him so close to unseating Turnbull at last year's election.
Take Shorten's utterly unreasonable position on needs-based funding of schools, that because Labor's version is supposedly superior to the Coalition's, Labor should do all in its power to block the government's legislation in the Senate and leave needs-based funding in limbo until Labor's re-election.
Shorten professes to care deeply about disadvantage students, but it makes you wonder.
As Dr Peter Goss, of the Grattan Institute, has argued, "Gonski 2.0 is a precious opportunity to lock in fairer deals on school funding. It should be seized by all sides of politics.
"Australia's long and toxic funding wars must end so we can move onto other much-needed education reforms."
In any case, Goss's analysis suggests that most of the extra $22 billion over 10 years that Labor says should be spent wouldn't be directed to student need.
Next is Labor's opposition to covering the rising cost of the National Disability Insurance Scheme with a 0.5 percentage point increase in the Medicare levy, in two years' time.
Since such an increase would be roughly proportional – hitting high and low income-earners by a flat percentage increase – Shorten wants to impose the increase just on those earning more than $87,000 a year.
For good measure, he wants to continue the Coalition's temporary 2-percentage-point budget repair levy on income above $180,000 a year, beyond its promised expiry at the end of this month.
All very virtuous (and I wouldn't object to paying either impost). But not if it's used as an excuse to block the government's increase in the Medicare levy.
It's easy for those out of power to advocate making the tax scale more progressive, but this would be a first for Labor in office.
Should Shorten win the next election, I wouldn't hold my breath waiting for him to reimpose the 2 per cent levy. And he doesn't want us to remember that funding the disability scheme with a 0.5 percentage point Medicare levy increase was perfectly fair enough for the Gillard government.
Somehow, I don't think these guys are fair dinkum.