I have a quick physics lesson for you. Don’t click away – I promise it’ll be short. Then I'll get out of your hair.

There's a concept called critical mass. It's the minimum amount of material needed before a chain reaction becomes self-sustaining.

Below that threshold, nothing happens.

Hit it, and the reaction takes off on its own. No extra push required.

Tonight, the calendar flips to August.

That means we're one month closer to November and one month closer to finding out whether this campaign has built enough momentum to cross the finish line.

I don't want to be pushing uphill in October. I want the reaction already running.

We've been stacking momentum all year. Every contribution, every volunteer hour, every door knocked adds a little more material to the pile. We're close. I can feel it. But "almost" doesn't win elections.

Democrats need a net gain of just three seats to flip the House, and races like mine are exactly where that majority gets built or lost.

Will you chip in tonight to help us hit that critical mass threshold before the month turns over? [[link removed]]

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Let's get going.

— Sean
PAID FOR BY CASTEN FOR CONGRESS
Casten for Congress
P.O. Box 132
Downers Grove, IL 60515-0132
United States
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