The phrase "a single majority" is correct and usable in written English.
It can be used in contexts where you are referring to one majority group or decision that holds power or influence in a situation.
Example: "In the recent vote, a single majority was required to pass the new policy, and it was achieved with a narrow margin."
Alternatives: "a clear majority" or "one majority group".
The case today, Mitchell v. Helms, No. 98-1648, was the oldest on the court's docket, having been argued on Dec. 1, and the justices' failure to settle on a single majority opinion after seven months showed that the turmoil was likely to continue.
For recommendations related to the 1961 Convention, e.g. cannabis scheduling, a single majority (27/53 votes) is required, to grant their approval in order for the recommendations to pass.
In Europe, the abnormal - the aberration - has always been monolingualism, homogeneity, and the desire to assimilate all divergence and dissidence into a single majority culture.
With a few exceptions, it added, "none of the precinct closures, relocations and consolidations being considered by the Board appear to negatively affect a single majority White precinct in Fulton County".
Positive predictions were combined into a single majority vote decision for each protein.
There was no obvious geographical pattern; many sampling sites harboured individuals with a single majority cluster membership, but there were also sites with highly admixed individuals.
The Human Development Index, a composite of education, life expectancy and income, shows Muslim majority countries as lagging behind with not a single Muslim majority country ranking in the top 25 while the majority in the bottom 25 being Muslim majority.
Unless it wins a parliamentary majority in its own right (and New Zealand hasn't had a single party majority government since 1994) it is going to have to form an executive or legislative coalition with another party.
The tyranny of a single, durable majority.
Electronic materials generally exhibit a single isotropic majority carrier type, electrons or holes.
If the Commons used STV but the Lords some kind of majoritarian system a single party majority in the upper house could potentially block the policies of a broader, and more widely supported, coalition in the Commons.
