The Vote Ledger
/
Data through Sep 17, 2026Compare members
The Vote Ledger
PM

Peter Francis Mack Jr.

Representative from Illinois
HOUSEDEMOCRAT1949–1963ID M000020
Compare
LegislationHEADLINE
86%with Dems
of 647 votes
Nominations
—with Dems
of 0 · confirmations only
All contested
86%with Dems
of 647 · both combined
Steepest move
−11 pts
1951 → 1953
still a Democrat

Career arc

Legislation leads. Each point is one Congress: how often they sided with the Democratic majority on contested bills, resolutions and amendments.

100%75%50%25%0%sides with Democrats ↑sides with Republicans ↓194919551961
1961–6287th Congress
Sat as a Democrat
80.9%with Democrats
of 115 contested votes
Votes for this Congress are open below
Steepest move: 1951 → 1953, −11 pts — while still a Democrat.
Sat as a DemocratSat as a RepublicanVotes available below

Votes

Every roll call before 1973 has no description. These rows carry a date, usually a bill number, how they voted and which side that matched — nothing is filled in by hand.

DateBillVoteTypeCastSided with
Oct 11, 1962S. 3451No description in the source recordLEGISLATIONYEADEM MAJORITY
Oct 6, 1962H.R. 13175No description in the source recordLEGISLATIONNAYREP MAJORITY
Oct 5, 1962S. 1447No description in the source recordLEGISLATIONYEABOTH · NOT SCORED
Full textNo description in the source record. What survives: the date, the bill number (S. 1447), how they voted and which side that matched.Party majoritiesDemocrats Yea · Republicans YeaCounts toward scoreNo — both party majorities voted Yea.
Where this lands
YEAVoted with both majorities — not scored
Oct 5, 1962H.Con.Res. 570No description in the source recordLEGISLATIONYEABOTH · NOT SCORED
Oct 5, 1962H.R. 7972No description in the source recordLEGISLATIONYEABOTH · NOT SCORED
Oct 4, 1962H.R. 4670No description in the source recordLEGISLATIONYEABOTH · NOT SCORED
Oct 4, 1962S. 1123No description in the source recordLEGISLATIONNAYDEM MAJORITY
Oct 4, 1962H.Res. 803No description in the source recordLEGISLATIONYEABOTH · NOT SCORED
Oct 4, 1962H.R. 12648No description in the source recordLEGISLATIONYEABOTH · NOT SCORED
9 most recent roll calls shown · 115 contested votes scored in the 87th CongressAll votes this Congress →

By policy area

career · legislation
The record carries no policy area for any of these roll calls, so there is nothing to break out.

Service record

7 Congresses
81st · 194987th · 1961
Democrat · House · IL81st–87th
Term datesexact
Members · Illinois
PM

Peter Francis Mack Jr.

Representative from Illinois
HOUSED1949–19637 CONGRESSES
Compare
LegislationHEADLINE
85.8%with Democrats
of 647 votes · 14.2% with Republicans
Nominations—of 0 votes
All contested86%of 647 · combined
Steepest move−11 pts1951→53, as a Democrat

Career arc

10050019491961
1961–62 · 87th · Democrat · of 115 votes80.9%

Legislation leads. Tap a point to read that Congress.

Votes

Every roll call before 1973 has no description. These rows carry a date, a bill number where one exists, how they voted and which side that matched.
Democratic majorityYea
Republican majorityYea
Counts toward scoreNo
Open roll call
Latest 6 shown · 115 contested votes scored in the 87th

By policy area

career

The record carries no policy area for any of these roll calls.

Service record

81st · 194987th · 1961
Democrat81st–87th

Party switchers

John Alexander LoganD→R · IL · 40thWesley Wade WatkinsD→R · OK · 105thBen Nighthorse CampbellD→R · CO · 104th
AD320 × 50 · Anchor