UPDATE: In the comment thread, Jason Harrow of SCOTUSblog weighs in with the answer:
We at SCOTUSblog have looked at this number. This Term, we counted four pluralities: TSSAA, FEC v. Wisc. Right to Life, Hein, and Parents v. Seattle Schools (details here). That number is not necessarily lower than previous Terms. According to our previous stats, there were 3 plurality opinions in OT05, 1 in OT04, 3 in OT03, and 5 in OT02. Hope that's helpful.It is, thanks!
Yup, we at SCOTUSblog have looked at this number. This Term, we counted four pluralities: TSSAA, FEC v. Wisc. Right to Life, Hein, and Parents v. Seattle Schools (details here).
That number is not necessarily lower than previous Terms. According to our previous stats, there were 3 plurality opinions in OT05, 1 in OT04, 3 in OT03, and 5 in OT02. Hope that's helpful.