Why did lincoln's pocket veto of the wade-davis bill outrage fellow republicans?
they believed it betrayed the party.
they wanted their own way in the matter.
it appeared he was siding with democrats.
he went against promises he had made.

Lincoln's pocket veto of the Wade-Davis Bill outraged fellow Republicans, because they believed it betrayed the party. Moreover, they thought President Lincoln was a weak president and should execute harsher punishment for the South and were against his Ten Percent Plan.