It is very sad news.
If I'm remembering my 2008 special election details correctly, we would probably hold a new election sooner than November. And I believe it's a Louisiana-style jungle primary?
ETA: After checking Wikipedia, it looks like it's not a jungle primary -- there were Republican and Democratic primaries and runoffs, but then there were extra Democrats and Republicans on the general election ballot anyway, causing no one to get 50% and sending it to yet another runoff (?)
Meaning they voted on March 11, April 1, April 22, May 13, and again in November.
Wikipedia is wrong, though sort of right.
The April 22 election was a jungle primary. The March 11 and April 1 elections were the regular, general primaries (the presidential primary also took place on march 11). This is why the april 1 opponents were on the april 22 ballot, and why they received about one percent each - the filing deadline was before April 1, but they had suspended their campaigns and endorsed their intraparty opponents, so the regular primaries were in practice used to determine the special election candidates.
(Yes, I still lurk fairly frequently, mostly on international elections and also on demographics and congressional elections. Yes, I'm aware this thread is elsewhere, but I saw this on the frontpage yesterday. No, I don't intend to go back to posting regularly, like, ever.)