[AuH2ORepublican]

“Arizona Republic, the newspaper-cum-opinion journal”

“???”

---

It means that it is a combination newspaper/opinion journal (i.e., it is a biased paper even though it pretends to be unbiased):

cum

[kuhm, koom]

–preposition

with; combined with; along with (usually used in combination): My garage-cum-workshop is well equipped.

Origin:
1580–90; < L: with, together with (prep.)

http://dictionary.reference.com/browse/cum

[Bad~Rodeo]

Thank you for the clarification, interesting