The phrase "a certain contingent" is correct and usable in written English.
It can be used to refer to a specific group or subset of people or things that share a common characteristic or condition.
Example: "A certain contingent of the audience expressed their dissatisfaction with the performance."
Alternatives: "a specific group" or "a particular subset".
Slugging first basemen who played in the 1990s are automatically suspected of steroid use by a certain contingent of voters, while speedy middle infielders like Biggio are not.
But suppose there were someone with an unusual psychology such that whenever he understood a certain contingent proposition, such as "there are more females than males on Gliese 581d", it would immediately seem true to him.
But for a certain contingent of music lovers namely, those hailing from the small, hyper-liberal bubble of experimental electronic music it felt like deja vu.
Catching the elusive artist at work was not so easy, as he was purportedly arriving unannounced and at odd hours -- a draw for a certain contingent of fans in itself.
"Coca-Cola or Dow or whoever would come to the president," explains a former White House colleague of Band's, "and say, 'We need your help on this.'".... There's an undertow of transactionalism in the glittering annual dinners...the fixation on celebrity, and a certain contingent of donors whose charitable contributions and business interests occupy an uncomfortable proximity.
This certainly parallels the changes in the predilection of clued up teenagers over the past two years, a certain contingent of whom have ditched the deep house, dip dyed Hype t-shirts and Huaraches of their 2012 predecessors for grime, tracksuits and a pair of 95s.
And that, says a certain younger contingent of the dance world, is exactly as it should be.
But the G1 did something more important than make T-Mobile the first Android carrier – it grabbed a certain user contingent who understood Android, understood the framework, and would follow the platform to the grave.
These two dimensions are to a certain extent contingent upon the first two.
Russell was also aware of certain contingent paradoxes involving propositions, such as the Liar paradox formulated involving a person S, whose only assertion at time t is the proposition All propositions asserted by S at time t are false.
The harm principle, to the extent that it is sound, is vindicated because it follows, given certain contingent facts, from the autonomy principle.
