Pretty much. Especially since we have all 9 on the official cover art and usually the main characters don't die. Just the supports so the senbatsu, the 76th trainees and mariko definitely have higher chances.
I got a feeling if anyone die..it would be Yuko just to motivate Nagisa, who want to be like her...Unless Kawamori killed off Acchan which might explain the reason why she's MIA and then that would be it.
anyway~
..omg Chieri~ so kewt <3