Reconstruction from Below:
  Union Veterans and Republican Legislator Voting
for Radical Reconstruction
  Michael Weaver
  September 12, 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, Civil Rights, Civil Rights
Enforcement, and Reconstruction (votes on Federal Powers over the South,
etc.)
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
 
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)