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Homework 8: Course Review              Math 107, Winter ’22, Levin

Amazing news!  The world has decided to honor you by creating a new nation with you as its leader. While you will be the first president, you decide based on your experience in the Unites States that future presidents will be elected using the Electoral College weighted voting system.

1. First, let’s determine some of the specifics of your nation. (a) What is the name of your nation? (You pick)

(b) Write your student number, one digit at a time, in the second row of boxes below:

A

B

C

D

E

F

G

H

I

SID:

9

5

We will use these digits to create aspects of your nation that are uniquely you!

(c) The digits under boxes H and I form the total number of members in the new House of Representatives.  (e.g.  If your digit below H is 7 and your digit below I is 2, then you have

72 members of the House of Representatives). If your number is single digits (e.g.  “06”, add one hundred, e.g. now “106”). Write that number here.

(d) For simplicity (and similar difficulty between students), your country will be divided into four states. Your states have population that depends on your student number according to the table below.  Treat each pair of numbers from your 95# as a two-digit number (e.g.  if “D” is 4 and “E” is 2, then “DE” is the number “42”). Pick names for your four states, and enter them along with the populations (based on part of student #) into the table below.

State Name

Part of Student Number

Population (thousands)

DE

FG

H

I


Total Population:

Note: If you have any number that starts with a “0” (for instance, if FG was “07”, or if H is just “0”), add a “1” in front (e.g. so that the resulting population for the FG example is “107” thousand, or for the H example is “10” thousand).


2. Now your House members have to be apportioned among the states. Use Hill’s method to appor- tion all of your House seats among the four states.


3. You decide that each state of your country, like the US, will get 2 Senators. Based on your appor- tionment of the House of Representatives and the fact that the presidency will use the Electoral College weighted voting system, use our standard notation to write your country’s presidential election as a weighted voting system.

4. While each voter in the weighted system is a state, how those votes are determined is still up for consideration.  We will try out several ways to award their Electoral Votes to candidates in each state. Below is a preference schedule for voters when considering between three presidential candidates.  Each of the numbers is written as a percentage of the total vote (since everyone’s populations will be different). Use the preference schedule along with the indicated voting method in each part to determine which candidate would win each state’s election. The candidate parties are Republican (R), Democrat (D), Libertarian, (L), and Green (G).

Table 1: State 1

Voters 21

R

L

D

G

Table 2: State 2

Voters 23

R

L

D

G







Table 3: State 3

of

23

R

G

D

L



Table 4: State 4

%    of

Rank 35   28   20L

R

D

G


(a) Using the instant runoff method, which candidate wins State #2?


(b) Using Black’s method, which candidate wins State #1?


(c) Using Black’s method, which candidate wins State #3?



5. It’s finally time to determine who your successor will be as president!

(a) Use plurality rule to identify the winning candidates in all four states.


(b) Based on the Electoral College weighted voting system, does the motion pass which would

make the Republican candidate your successor as president? Write your answer in terms of winning/losing coalitions.