Answer:

   

# of

Voters

 

Place

130 120 100 150
1st P T T S
2nd S S P P
3rd T P S T

 


If you had trouble, think of it this way. Rita is out, so mark through all the R's in the preference schedule.
   

# of

Voters

 

Place

130 120 100 150
1st P T T S
2nd R R R R
3rd S S P P
4th T P S T

Now, each candidate below R in each of the columns moves up one position producing the preference schedule below.
   

# of

Voters

 

Place

130 120 100 150
1st P T T S
2nd RS RS RP RP
3rd T P S T
4th        

Since the R's are marked out, they can be taken out of the preference schedule and since there are no longer any entries in the 4th place row, it can be eliminated to produce the final preference schedule.
   

# of

Voters

 

Place

130 120 100 150
1st P T T S
2nd S S P P
3rd T P S T

After each round, the new preference schedule will have one less row.

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