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Data through Sep 17, 2026Compare members
The Vote Ledger
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William Henry McMaster

Senator from South Dakota
SENATEREPUBLICAN1925–1931ID M000563
Compare
LegislationHEADLINE
69%with Dems
of 391 votes
Nominations
—with Dems
of 0 · confirmations only
All contested
69%with Dems
of 391 · both combined
Steepest move
+30 pts
1927 → 1929
still a Republican

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 ↓1925
1929–3071st Congress
Sat as a Republican
83.6%with Democrats
of 226 contested votes
Votes for this Congress are open below
Steepest move: 1927 → 1929, +30 pts — within one party label.
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
Mar 3, 1931S. 255No description in the source recordLEGISLATIONYEABOTH · NOT SCORED
Mar 2, 1931H.R. 16836No description in the source recordLEGISLATIONYEABOTH · NOT SCORED
Mar 2, 1931H.R. 16836No description in the source recordLEGISLATIONYEAREP MAJORITY
Full textNo description in the source record. What survives: the date, the bill number (H.R. 16836), how they voted and which side that matched.Party majoritiesDemocrats Nay · Republicans YeaCounts toward scoreYes — the parties split.
Where this lands
YEASided with the Republican majority
Feb 27, 1931H.R. 17054No description in the source recordLEGISLATIONYEABOTH · NOT SCORED
Feb 26, 1931H.R. 17163No description in the source recordLEGISLATIONYEANEITHER · NOT SCORED
Feb 21, 1931H.R. 16969No description in the source recordLEGISLATIONNAYNEITHER · NOT SCORED
Feb 19, 1931H.R. 17054No description in the source recordLEGISLATIONYEABOTH · NOT SCORED
Feb 14, 1931H.R. 14675No description in the source recordLEGISLATIONYEABOTH · NOT SCORED
Feb 11, 1931H.R. 6603No description in the source recordLEGISLATIONYEABOTH · NOT SCORED
9 most recent roll calls shown · 226 contested votes scored in the 71st 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

3 Congresses
69th · 192571st · 1929
Republican · Senate · SD69th–71st
Term datesexact
Members · South Dakota
WM

William Henry McMaster

Senator from South Dakota
SENATER1925–19313 CONGRESSES
Compare
LegislationHEADLINE
69.3%with Democrats
of 391 votes · 30.7% with Republicans
Nominations—of 0 votes
All contested69%of 391 · combined
Steepest move+30 pts1927→29, as a Republican

Career arc

10050019251929
1929–30 · 71st · Republican · of 226 votes83.6%

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 majorityNay
Republican majorityYea
Counts toward scoreYes
Open roll call
Latest 6 shown · 226 contested votes scored in the 71st

By policy area

career

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

Service record

69th · 192571st · 1929
Republican69th–71st

Party switchers

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