Jeff Petry led the Green and White with a goal and two assists as the Spartans defended their home ice with a 5-2 win over the Wolverines on Friday.
Michigan regrouped on Saturday as Tim Miller led the Wolverines to a 5-2 victory at the Joe Louis Arena.
Northern Michigan moved back into third place after sweeping the Nebraska-Omaha Mavericks in Marquette.
Ferris State dropped from No. 3 to No. 4 after splitting with Bowling Green on the road.
All other teams remain frozen in the same spot as last week.
1) Michigan, 26-4-4 (split with No. 6 MSU)
2) Michigan State, 21-9-5 (split with No. 1 U-M)
3) Ferris State, 14-13-5 (split with BGSU)
4) Northern Michigan, 15-16-3 (swept UNO)
5) Michigan Tech, 11-16-5 (swept at No. 12 St. Cloud)
6) Wayne State, 9-21-2 (idle)
7) Lake Superior, 8-18-6 (swept Alaska)
8) Western Michigan, 7-24-3 (swept by No. 5 Miami)
Each week, MichiganCollegeHockey.com editors Matt Mackinder and Tom Balog will compile the MiCHO Power Poll. The poll will comprise the eight Division I teams in the state of Michigan.