Reconstruction from Below:
Union Veterans and Republican Legislator Voting
for Radical Reconstruction
Michael Weaver
April 5, 2025
Why was Reconstruction
“Radical”?
- Revolutionary moment (Foner 1988)
- Increasing evidence of effects (Stewart and Kitchens 2021; Logan
2020; Chacon and Jensen 2020; Rogowski 2018)
- Not obvious that it would happen
- Understanding why legislation passed helps
understand weakening
- Question: Why did
Congress adopt these policies?
Why?: (i)
Electoral Incentives
Vallely (2004) and others suggest:
- Republicans faced strategic dilemma with South rejoining the
Union
- Democrats would gain seats; need for Republican voters in the
South
- Enfranchisement of African Americans provided an answer
- Changing electoral incentives weakened Reconstruction
Why?:
(ii) Factions and Public Opinion
- Republican party was new, composed of factions that disagreed on
Slavery and Civil Rights
- Republican factions backed Black suffrage before the war (Bateman
2020)
- Factional politics determined trajectory of Civil Rights Legislation
(Jenkins and Peck 2021)
- Party sensitive to public opinion, unfolding events (Wang 1997)
Three Major
Questions
Truth to both (i) and (ii)…
Where did public support among Northern voters come
from?
Why did state parties move faster than Congressional
Republicans?
Were Republican factions persistent over time? (Abolitionists
like Horace Greeley \(\to\) Liberal
Republicans)
Argument:
Union Veterans, Activism from Below
Union Veterans…
- Formed a large vote bloc (~25% of eligible voters in the North)
- Became Republican voters
- Interpreted “Won Cause” as linked to ending slavery, gaining Civil
Rights
\(\to\) Veterans provided public
support and votes for Republicans during Reconstruction
(Weaver 2022)
Argument:
Union Veterans, Activism from Below
Union veterans formed organizations (like the Grand
Army of the Republic) that
- Mobilized votes during elections (1866, 1868)
- Had strong connections to Radical Republicans
- Took strong stances on Reconstruction politics
\(\to\) Veterans organizations could
push Radical policies from the bottom up
Testing:
Implications
- Members of Congress with more veteran constituents should take more
pro-Civil Rights positions, after the war (public support)
- Republicans in Congress from districts with more
veterans should take increasingly pro-Civil Rights positions, after
the war (organizational pressure)
Testing: Data
- Enlistment Rates: enlistment rate for military aged males in 1860 by
Congressional District (Dippel and Heblich 2021)
- Civil Rights Ideal Points:
- House Roll Calls from 35th (pre-war) to 44th (last “Reconstruction”)
Congresses
- Identified civil rights related votes (Bateman and Lapinski
2016)
- Slavery, Prosecution of the War (as pertains to African Americans
and former slaves), Civil Rights, Civil Rights Enforcement, and
Reconstruction (votes on Federal Powers over the South, etc.)
- Estimate ideal points in each Congress
Testing: Ideal
Points
Two problems:
Radicals voted against moderate proposals
- normal scaling techniques mislabel Radical legislators (Thaddeus
Stevens)
- use “Ends against the Middle” estimator from (Duck-Mayr and
Montgomery 2023)
Policy spaces in successive Congresses not comparable
- Raw scores cannot be meaningfully compared
- Rankings in policy space are meaningful
- Congress shifting toward “Progressive” civil rights
positions; did legislators from districts with more enlistment increase
their ranking on civil rights issues?
Testing: Design
A kind of continuous differences-in-differences:
- Did relationship between enlistment rates and civil rights voting
change after veterans returned home?
- Did civil rights rankings within districts change more in
places with more enlistment?
\[\text{Civil Rights Rank}_{dc} =
\alpha_{d} + \alpha_{c} + \sum_{c = 39 \neq 38}^{42}
\beta_c \text{Enlistment}_d * \mathrm{Congress}_c + \epsilon_d\]
Enlistment-Civil Rights Voting Correlation by Year

Change in Civil Rights Voting by Enlistment (Panel)

Interpretation
Districts with higher enlistment saw legislators
increase their ranking in pro-Civil Rights voting after
the Civil War
- these legislators moved more even as Congress as a
whole adopted more Radical policies
- these changes are not ONLY due to Republican seat gains
- effects persist when looking at seats held by Republicans; same
legislator over time
Next Steps
- Look at specific votes: which issue areas drive this change?
- A common policy space (?): ranking pairs of votes
- Tracing the mechanisms: GAR posts/activities, activism in state
houses, data on veterans in state/county conventions(?)
- Durability of Reconstruction coalition: do these effects persist
later? (Bateman 2023)