Space Stocks: Can Democrats Stall Golden Dome

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Part of our midterms guide. Start here: what the vote really changes for your money.

Betting markets give Democrats about a 94% chance of winning the House on Tuesday, and about three in four of taking the Senate too. President Trump keeps his veto. For space stocks, that means one thing above all: Congress, not the White House, writes the checks. The question is which checks.

The vote reaches budgets. Most of these stocks are waiting on regulators and rockets.

All four are down over the past year, three of them by more than half. None of that came from Congress. And all of them together are worth less than 4% of SpaceX, which has its own piece.

Exposure is our judgment of how much Tuesday's outcome can change each company's revenue, costs or approvals, given that a Democratic House can investigate, write budgets and block bills, but can't pass laws past a veto. Values and returns are at the Nov 2 close (Trefis market data). Combined value about $52 billion vs SpaceX's $1.85 trillion (its Q3 10-Q share count). Rocket Lab sits 65% below its 52-week high, AST 73%.

Why Is Golden Dome The Real Exposure?

Because of how it's paid for. The missile-defense shield got about $25 billion for 2026, and almost all of it came through the 2025 tax-and-spending law, not the normal budget. For 2027, the White House asked for about $17.5 billion. Only about $400 million of it was in the regular budget request. The rest needs another party-line bill like the 2025 one.

A Democratic House would not pass one. That's the hidden link: Democrats don't have to vote against Golden Dome to slow it. They just have to not pass the vehicle it rides on. Its own program chief warned in August that without new funding there is "no Golden Dome."

That's why Rocket Lab ranks highest here. It builds satellites for the Space Development Agency, the missile-tracking layer Golden Dome builds on. Contracts already signed are safe. New money is the question.

Wouldn't Democrats Cut NASA Too?

The opposite, probably. The White House asked for $18.8 billion for NASA in 2027, a 23% cut from the $24.4 billion Congress approved for 2026, with science cut almost in half. Appropriators in both parties called it too low. Democrats protect science budgets. That's mildly good for anyone who builds NASA spacecraft or launches its small missions, Rocket Lab included.

Who Decides Air Taxis And Satellite Phones?

Agencies, not the House. Joby is in the last stage of FAA certification and in March flew its first FAA-conforming aircraft, built for the final checks. A White House pilot program lets air taxis fly limited routes before full approval. Both are executive decisions. Air taxis also have rare support from both parties.

AST's fate rests on the FCC and on rockets. One of its launchers, Blue Origin's New Glenn, exploded on the pad in May. It now aims for about 45 satellites in orbit by early 2027. No House vote moves a launch date.

What Could Go Wrong?

A long shutdown. The government is running on a stopgap budget that began Oct. 1. Stopgaps freeze new programs, and the FAA slows down when it runs short of staff. Then there's the 2027 debt limit, where every new program is a bargaining chip. And these stocks swing hard: three-month volatility runs from about 48% to 63% a year for Joby and Rocket Lab.

Most exposed: Rocket Lab. Least: Joby and Archer. A Democratic House can starve Golden Dome by refusing another party-line budget bill, and may add money to NASA. Air taxis and satellite phones answer to the FAA, the FCC and their rockets, not to Tuesday.

Related: which megacaps have the most at stake.

How Much Of Your Portfolio Is Waiting On Washington?

Elections change the odds, not your plan. If you have $1 million or more invested, see what Tuesday means for your portfolio in a free 15-minute call with a Trefis partner firm.

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