I doubt whether folk judge politics in an entirely arithmetical fashion: they are more likely to reach an overall qualitative assessment.
Nonetheless, the SNP have done the right thing in publishing the details of their oft-repeated claim that they have achieved 84 out of their 94 headline commitments.
In fact, they might have been better to have got this out of the way some time back - before the claim was rather too oft repeated and the wicked media got grumpy about being invited to report an assertion which was not backed by published evidence.
Privately, party strategists say they contemplated outlining the list at the dissolution of parliament but concluded that it was better to publish a full analysis around the time of the manifesto launch.
The list contains the achievements: abolishing the graduate endowment, putting one thousand more police officers on the street, meeting new cancer waiting times, freezing the council tax, abolishing bridge tolls.
It also contains 10 areas where the SNP fell short in office - including five in the field of education.
In essence, the party offers three justifications for these.
Resources fell short - that applies to the issue of taking over student debt.
Opposition from rivals in Holyrood - the independence referendum, for example.
Pursuing different options in government - first time buyers grant.
Anent the council tax, it is being said by some that the promise of a freeze did not feature in the manifesto.
True - but SNP policy folk point out that it featured in an accompanying wrap-round document setting out first steps.
That document, they say, was an integral part of the manifesto offer.
So the freeze which was a "first step" en route to the introduction of a Local Income Tax ended up being the final step not just for the past parliament - but, if the party is re-elected, for the one to come.
Opposition reaction varies.
Labour points to the education promises - and particularly the offer to "dump student debt." That, they say, adds up to a £2bn broken promise.
The SNP says the idea of eliminating debt faced Holyrood opposition - and that, in the event, they found other ways of targeting help to students.
The Liberal Democrats, similarly, accuse the SNP of letting voters down.
The Tories, while echoing that theme, also argue that certain key pledges, such as bobbies on the beat, would not have been delivered without them.
Individual people, individual sectors, may be so delighted by a particular promise kept or so scunnered by a failure to deliver that they may tailor their vote accordingly.
Most, I reckon, will reach a more wide-ranging assessment, based on a comprehensive impression of how they reckon the SNP fared in office by comparision with what they might expect from alternatives.
The SNP's opponents, of course, expect that assessment to be negative.
SNP leaders, as I noted here yesterday, believe that folk will give them credit, overall, for a decent effort.