The phrase "a contest based on" is correct and usable in written English.
You can use it when describing the foundation or criteria upon which a contest is organized or judged.
Example: "The competition is a contest based on creativity and originality in design."
Alternatives: "a competition centered around" or "a challenge founded on".
"When he was 16, he held a contest based on rolling a Yahtzee dice.
A contest based on personalities would be an exception.Yet Mr Aso's standing in opinion polls has slid since he took office, narrowing the gap with Mr Ozawa: his honeymoon was brief indeed.
Contests are a great way to engage users, and Airbnb recently held a contest based on Instagram inspiration.
The bold concept recently took home first prize at eVolo's 2015 Skyscraper Competition, a contest based on radical reimaginings of the traditional skyscraper. .
Within an organization, a bounded rational principal organizes a promotion contest based on a sequence of tests regarding candidates' relative performances.
This is basically a popularity contest based on a public vote.
On one night it invited two "hyperestheticnauts" to conjure a multimedia contest based on Hermann Hesse's "Glass Bead Game"; the very next night it sponsored the latest installment of "Nerdlesque," devoted to racy comic-book-themed costumes that make George Clooney's nipple-contouring duds in "Batman & Robin" look downright genteel.
In a thinly veiled attack on her older rival, Ms King warned that Londoners did not need a "popularity contest based on who's wacky or who's stale".
There's a dance contest based on "Saturday Night Fever" with the flashing disco-floor lights but without any story — without the movie's ethnic gang wars, conflict over abortion, or dramas of sexual assault.
BOSTON — Oct. 28, 2008 — Today at the Embedded Systems Conference (ESC) Boston, Microsoft Windows Embedded announced SPARKs Will Fly, a new contest based on the successful Microsoft Windows Embedded SPARK Your Imagination community-focused program launched in April 2008.
This means that he would clearly beat Trump in a head-to-head contest based on primary voters.
