Here's a figure that should stop you cold: $128 million. That's the total estimated taxpayer risk, right now, tied to special elections that would have to be held if current members of Congress can't finish their terms. Not a hypothetical decade from now. A live number based on the Congress sitting today.
Special elections aren't free. Every time a seat opens up mid-term, states have to run a whole separate election to fill it, ballots, polling places, staff, security, the works. That cost lands on taxpayers, not on the member who left. And the older and more fragile the composition of Congress gets, the more that risk stacks up across dozens of seats at once. $128 million is what that stack looks like right now.
Start with this: 5 members of Congress currently have a completion probability under 50 percent. Read that plainly. Our model gives these members less than a coin flip's chance of finishing out their current term. That's not a judgment about any one person's health or plans, it's a statistical estimate built from the kind of data we explain below, and it's the clearest signal in our whole dataset that the risk of a costly special election is real and concentrated, not theoretical.
Now look at where the biggest dollar exposure sits. These are the 5 members whose seats would trigger the highest special-election cost if they vacated:
Maxine Waters, California House: $100M estimated cost, 66% completion probability.
Nancy Pelosi, California House: $100M estimated cost, 70% completion probability.
John Garamendi, California House: $100M estimated cost, 83% completion probability.
Doris O. Matsui, California House: $100M estimated cost, 83% completion probability.
Zoe Lofgren, California House: $100M estimated cost, 88% completion probability.
Notice two things. First, every single one of these top five is a California House seat, which tells you that the cost of a special election depends heavily on the state and district running it, not just on who holds the seat. Second, completion probability and cost aren't the same axis. A high-cost seat can also have a relatively strong completion probability, like Lofgren's 88 percent, while a seat can carry real vacancy risk (under 50 percent) without being one of the priciest to replace. Cost tells you what's at stake. Completion probability tells you how likely that stake actually gets called.
This isn't about rooting for anyone to leave office, and it's not a prediction that any specific seat will flip. It's about seeing the system clearly. Congress skews older than almost any other part of American public life, and every year a member serves past the point where finishing a term becomes uncertain, taxpayers are quietly holding risk they didn't sign up for.
When you look at a member's page on Too Damn Old and see a completion probability and a special-election cost estimate sitting side by side, read them as a pair. A member with a low completion probability and a high estimated cost is a seat where the taxpayer exposure is real and expensive if things don't go as planned. A member with a high completion probability carries less near-term risk, even if their seat's raw special-election cost is high. Use both numbers together, not one in isolation, to understand where the actual pressure points are in Congress right now.
This is also a tool for accountability, not alarm. It's a way of asking a very grounded question: are we, as voters, comfortable with how much risk and cost is built into a system that has no mechanism for graceful, planned transitions? That question applies across the entire chamber, not to any one party or person.
The completion probability for each member is a statistical estimate of the likelihood they finish their current term, built from data points we track across the full membership of Congress. The special-election cost estimate reflects what it would cost that member's state to actually run a special election to fill the seat if it opened up, which is why the number varies so much by state and district rather than by the member personally.
Multiply the risk of a vacancy by the cost of filling it, aggregate that across all 535 seats, and you get the $128 million topline figure. It's not a prediction that this money will be spent. It's an honest accounting of what taxpayers are on the hook for if the current pattern holds.
We built this dataset to be checked, not just trusted. If you want the full breakdown of how completion probability and special-election costs are calculated, including the state-by-state cost assumptions, visit toodamnold.com/data. The whole point of Too Damn Old is that you shouldn't have to take our word for it.