All 822 seats
Every seat the registry knows — 222 parliamentary and 600 state — listed whether or not any coverage has matched it. 796 have matched at least one article.
A seat with no coverage is still listed, and that is the point: its emptiness is an answer to a reasonable question, not a hole in this page. The count is all-time, so it is much larger than the front page's 30-day board — the two measure different things. Coverage is gathered seat by seat, so a low count often means a seat has not come round in the crawl order yet rather than that nothing was written about it. The seat lookup answers a different question: which one seat a name resolves to. It refuses to guess.