Expanding the House of Representatives

The proposal

The Constitution caps district size at one representative per 30,000 people and guarantees each state one seat; the rest is statute. The House grew after nearly every census until 1911 and was fixed at 435 by the Permanent Apportionment Act of 1929.¹ The amendment as commonly framed would entrench a formula: a fixed ratio; the Wyoming Rule, sizing the average district to the least-populous state (about 574 seats); or the cube-root rule (about 692 seats).² A fourth variant is a pedigree argument — “Article the First,” the unratified 1789 apportionment article, whose formula read literally today would require more than 6,000 representatives; the one pending bill naming it would extinguish it with a 2026 deadline.³⁴ The leading institutional proposal, 150 more seats, is statutory: “a vote of Congress is all that is needed.”⁵

The evidence

Only one independent pollster has asked about House size with a party breakdown in the modern record. Asked in July 2023 whether the House should be increased, decreased, or kept the same, 29% chose increase and 53% keep the same — 23% of Republicans and Republican leaners and 35% of Democrats and Democratic leaners favored an increase, and “larger shares in both parties favor keeping the House at its current size” (Pew Research Center, 2023).⁶

The same question five years earlier drew 28% — 21% of Republicans and 34% of Democrats (Pew Research Center, 2018). Told that the first Congress had 65 members at roughly 60,000 people each against 435 at roughly 700,000 now, Democrats rose to 44%; Pew reported no differences among Republicans.⁷

An earlier academic survey is the only one that named the costs. Given both sides — closer representation against greater expense and a less efficient legislature — 18.9% chose an increase and 61.9% the current size: 11.3% of Republicans, 23.7% of Democrats, and 22.7% of independents and others (Knowledge Networks, fielded for an academic study, 2006).⁸

The newest number is advocacy-commissioned: 54% support and 27% oppose adding 150 members (Verasight for Fix Our House and New America, both advocates of the reform, 2026; no party breakdown published for the item).⁹ Its two-way form has no “keep it the same” option, its stem carries the growth argument inside the question, and 18.6% answered “not sure,” so it is not comparable with Pew’s three-way form. There is no roll-call vote and no ballot measure; the last statutory enlargement bill drew two cosponsors, both from one party, and died in committee.¹⁰ No independent-tier pollster has asked since 2023.¹¹

The test it failed

The bipartisan floor is 23% of Republicans (Pew, 2023): Weak. Neither party has recorded majority support in an independent poll, and three independent readings twenty, eight, and three years apart place the Republican number between 11% and 23%. Two tests carry the decision.

• Weak floor. There is no high topline concealing a partisan split; the 29% overall is itself the finding, and the Democratic figure is also below the bar.
• Why an amendment — weak. House size has been statutory since 1911 and 1929, and Article I leaves the number to Congress within a ceiling and a floor. Congress can enlarge the House by ordinary legislation, which is what the leading institutional proposal recommends. Amendments lock in agreement the country has already reached; here the statute has never been passed.

Three further findings support the decision. Depth was tested once and failed: the only costs-named reading put the floor at 11.3% of Republicans (Knowledge Networks, 2006). Framing dependency is unresolved, because Pew’s three-way and Verasight’s two-way forms differ in sponsorship, format, and content at once. Staleness is a risk: the party-split data end in 2023.

The category was not closed on symmetry, which it passes. In 10,000 simulations at each size from 435 to 700 seats, Republicans’ probability of control rises roughly 2–3 points below 525 seats and Democrats’ by no more than roughly 2.7 points above it, with “no partisan impact” on the Electoral College (American Academy of Arts and Sciences, an advocate of enlargement that publishes its method).¹² Whether the ratio itself threatens the country’s future is unsettled: roughly 60,000 constituents per member in the first Congress, 761,169 today.¹³

Framings we tested

None clears the bar. Of the two rationale framings tested in 2006, keeping states from losing seats after reapportionment drew 26.2% of Republicans and 39.2% of Democrats; more opportunities for women and racial minorities to be elected ran highest and most divided at 33.9% of Republicans and 59.7% of Democrats, and the study concluded a proposal built on that rationale “would not garner a bipartisan consensus.”¹⁴ The Wyoming Rule, the cube-root rule, a constitutional formula, and “Article the First” have never been polled by name or description, so the rejection does not claim they were measured and failed — it records that the best case has not been made in twenty years of asking. Any future poll would need to test the formula, not the slogan: a constitutional ratio, Article the First’s approach, produces a chamber of thousands.

The path back

Two conditions, in order. A statutory enlargement must be tried — passage of a bill enlarging the House, or a serious cross-party floor vote on one — which would answer the why-an-amendment test. Then an independent pollster, with published party crosstabs, must test the mechanism rather than the direction: a Wyoming-Rule or cube-root formula described in full, with a follow-up naming the added members, salaries, and offices. A Republican floor of 45% or better would reopen the category. Until a statute has been tried, a strong poll would answer the floor question but not the why-an-amendment one.

← All rejected categories