Democrats Gain Legislative Power to Shape State Constitutional Amendments
New legislative majorities in four states enable single-session constitutional amendment referrals to voters.
1Legislative Control Shifts
Following the November 3, 2026, elections, Democrats secured control of 12 state legislative chambers. This shift significantly alters the process for placing constitutional amendments on state ballots. Arizona, Michigan, Minnesota, and New Hampshire are now positioned to refer amendments to voters within a single legislative session, bypassing previous partisan roadblocks.
2Single-Session Amendment Rules
Most states, specifically 36 out of 49, require only one legislative session to approve constitutional amendments. Arizona and Minnesota allow this via a simple majority, granting Democrats immediate power to act. Conversely, New Hampshire and Michigan require supermajorities, meaning Democrats must still navigate specific vote thresholds to successfully advance their proposed changes.
3New Hampshire Supermajority Hurdles
New Hampshire requires a three-fifths supermajority in both chambers to place an amendment on the ballot. Democrats secured a 15-9 majority in the Senate, meeting the 15-seat requirement. In the House, they won at least 261 seats, successfully surpassing the 240-seat threshold needed to bypass Republican opposition for future constitutional ballot referrals.
4Michigan's Legislative Thresholds
Michigan mandates a two-thirds supermajority in both chambers for constitutional amendments. Democrats won a 23-15 Senate majority and a 63-47 House majority. Because these totals fall short of the required 26 Senate and 74 House seats, Democrats cannot refer amendments to the ballot without securing support from Republican legislators in the state.
5Two-Session Amendment States
Nine states, including Wisconsin and Pennsylvania, require amendments to pass during two successive legislative sessions. In these states, a legislative election must occur between the two votes. Democrats recently gained control of both chambers in Wisconsin and Pennsylvania, but they must retain these majorities after the 2028 elections to finalize any amendments.
6Wisconsin's Pending Amendment
The incoming Wisconsin Legislature faces a pending Republican-passed amendment that would establish a legislative veto over executive agency rules. This proposal follows a 2025 state supreme court ruling that overturned the legislature's previous authority. Democrats must now decide whether to advance this measure, which originally passed with exclusively Republican support in February.
7Historical Failure of Amendments
Data from 2010 to 2026 shows that 81% of constitutional amendments awaiting a second-session vote failed when party control shifted. Only 19% successfully passed and reached the ballot. Amendments that did advance typically enjoyed bipartisan support during the initial vote, highlighting the difficulty of passing measures without cross-party cooperation after elections.
8Pennsylvania's Legislative Landscape
Pennsylvania currently has no pending amendments, as previous proposals stalled following the 2022 shift to divided control. Democrats now hold both chambers but would need to retain control in 2028 to pass new amendments without Republican support. The state also retains an emergency provision requiring a two-thirds vote for one-session passage.
9NPVIC Electoral Strategy
Five states with new Democratic trifectas—Arizona, Michigan, Nevada, Pennsylvania, and Wisconsin—could potentially adopt the National Popular Vote Interstate Compact. If these states join, the compact would reach 283 electoral votes, exceeding the 270-vote threshold required to take effect. Currently, 18 states and Washington, D.C., represent 222 electoral votes for the compact.
10Legislative Intent for Compact
Democratic leaders in Arizona, Wisconsin, and Pennsylvania have expressed interest in prioritizing NPVIC legislation. However, historical attempts in Michigan and Nevada faced challenges, including a 2019 gubernatorial veto in Nevada. Legislators in these states must now determine the specific mechanism for moving forward while addressing concerns about the compact's potential constitutional validity.
11Arguments Regarding Compact
Proponents argue the NPVIC forces presidential campaigns to engage voters in all 50 states rather than focusing solely on swing states. Critics, including legal scholars, contend the compact may be unconstitutional or require congressional approval. Opponents also fear it could diminish the influence of smaller states and force electors to ignore local results.
12Future Political Implications
The shift in legislative control creates a new dynamic for state-level constitutional changes and national electoral policy. While Democrats have gained significant procedural power, the requirement for supermajorities in some states and two-session approvals in others ensures that partisan consensus remains a factor. The 2028 elections will be critical for these long-term goals.