And it couldn't run concurrent with the primary because.....
Because New York still lives in the Dark Ages when party bosses controlled everything they could grab onto. Heck, in this case, Patterson is clearly violating the state law on filling Congressional vacancies.
No, running it concurrent with the primary would have given party bosses more power, because there wouldn't have been a primary. Think before you go making incendiary statements.
There still won't be a primary for the special election. One might presume the parties will wait until after the primary for the full term to select a candidate for the special election, selecting whomever has won the primary. The article Lunar's thread-starting post implied that Paterson's decision gave the party bosses
more power, but in an update said that the election won't be called until October (after the primary), and I'm not sure a committee or what-not could officially nominate a candidate for a special election that has not yet been called.
For a regular (non-special) election, can any Joe or Joanne Shmoe in New York who is legally qualified for a certain elected office on the state ballot get on the ballot by collecting signatures, even if he/she has no supporters at state/county conventions? Do conventions even endorse/"nominate" candidates in primaries like they do in Minnesota?