Ohio State probably will drop out of 1st place, but will be close and receive some #1 votes.
What does the future hold? According to Pomeroy, Ohio State has the roughest road ahead of the contenders, but the Buckeyes already have traversed a tougher road.
Ohio State's SOS is now ranked in the top 25, while Kansas and Duke are now in the region of #35. All other things held constant, Ohio State's SOS will be in the vicinity of #14 to #17 at year end.
Ohio State has tough games left at Purdue and Penn State and home against Sparty. Kansas nor Duke both play three teams ranked below Indiana, which is Ohio State's easiest game. Neither face a remaining games SOS that presents even a similar challenge as the one the Buckeyes must face.
If Ohio State wins out, then there is no way that any other team should be able to claim #1.