How are lottery numbers drawn? Two ways: physical ball machines (gravity-pick or air-mix) for the televised games, and certified random number generators for many state daily games — both wrapped in an audit protocol that starts hours before the draw and ends with results you can verify yourself. Here's what actually happens between "sales close" and the numbers landing on your screen.
The two kinds of drawing machines
Gravity-pick machines — the style Powerball uses — tumble solid rubber balls in a spinning drum with paddles; balls drop one at a time through a hole at the bottom. They're prized for transparency: every ball is visible from mixing to selection. Air-mix machines blow ping-pong-style balls around a chamber with jets of air and release them through a tube. Most machines used by US lotteries come from a small number of specialist manufacturers — the largest, Smartplay International, supplies lotteries in dozens of countries. Neither style has memory, and neither can be tuned toward numbers without physically altering the equipment — which is what the ball-set controls below exist to catch.
Why there are multiple machines and ball sets
A drawing doesn't use "the" machine and "the" balls. Lotteries keep several certified machines and multiple sealed ball sets per game, and which combination is used tonight is itself chosen at random shortly before the draw — an attacker would have to compromise all of them. Ball sets are weighed to fractions of a gram, measured, and periodically X-rayed; they're stored in sealed cases under dual control (two people, two locks), and any set that leaves custody or shows wear is retired. These controls are the direct legacy of the 1980 Triple Six Fix, when weighted balls briefly beat a televised draw — the full story is in is the lottery rigged.
The draw-night protocol
- Pre-draw tests: before the real drawing, the selected machine and ball set run multiple test draws; the results are logged and checked for anomalies.
- Independent witness: an outside auditor attends every drawing, verifies the machine/ball-set selection, observes the tests and the live draw, and signs the results.
- The draw itself: conducted by draw officials under camera; for Powerball, at the Florida Lottery's studio with the Multi-State Lottery Association providing the multi-state framework.
- Post-draw verification: results are confirmed, signed, and only then released to sales systems, broadcasters, and websites — which is why official numbers appear minutes, not seconds, after the balls settle.
RNG drawings: the computerized draws
Many state daily games (and some jackpot games) replaced balls with random number generators. Modern practice — hardened after the RNG-era Eddie Tipton fraud — uses independently certified hardware RNGs on air-gapped machines that never touch a network, code audited by outside gaming laboratories, tamper-evident seals, and parallel logging so any manipulation leaves a trail. Several states responded to Tipton by moving high-profile games back to physical balls entirely; both methods, run to current standards, produce statistically indistinguishable randomness.
"Are drawings ever not live?"
Some drawings are televised live; many others are conducted live but published as results with video available on the lottery's site — daily games with multiple draws per day (see what time drawings happen) are rarely broadcast. Either way the protocol is identical: tested equipment, auditor present, sealed records. The draw happens at the scheduled minute whether or not cameras are rolling for TV, which is also why sales cut off before draw time.
How to verify a draw yourself
Cross-check any drawing across independent surfaces: the state lottery's published results, the multi-state game's official site, and archives like ours — every draw we record keeps a permanent public record you can download. If a result were ever altered after the fact, the discrepancy would be visible across archives within minutes. Check tonight's outcome on the Powerball and Mega Millions pages, or search any past drawing by date.
Play responsibly — 1-800-GAMBLER.