favorContestation property
When both adhesion and contestation groups are of equal size,
which one will define the second median grade ?
We favor contestation by default, for a bunch of reasons: precaution,
conservatism, emotional investment, default grade as the "worst" grade…
Set this to false to favor adhesion instead.
Note that this rule is important in low-participation polls, cit. needed
but quickly wanes as participation rises.
Implementation
bool favorContestation = true;