By

[NewHope]

What does "by" mean?

Context:

Reports of differences that have surfaced with increasing intensity in recent months had more to do with competing power bases and jockeying by proteges within the party than fundamental policy differences, he said.

 

[Casiopea]

What does "by" mean?

Context:

Reports of differences that have surfaced with increasing intensity in recent months had more to do with competing power bases and jockeying by proteges within the party than fundamental policy differences, he said.

'by' markes the subject/actor/doer of 'jockeying':

by proteges => proteges jockeying within the party

All the best,