Oregonian here, born and raised. I don’t live in OR-6 but can see it from my home. I’m by no means a member of EA but I’m aware of it and until now had a generally favorable impression of you all.
I hope that rather than donating, folks in this thread will think about what they’re doing and whether it’s a good idea. The most obvious effect of this effort has been to 5-10x the total spending in this race. It’s pretty easy to read it as an experiment to see if CEA can buy seats in congress. Thats not innovative, it’s one of the oldest impulses in politics: we’re rich, let’s put my friend in power.
Further, it sounds like your friend Carrick is a great guy, but he’s got many defects as a candidate. He’s only lived in Oregon for about 18 months since college. From the few interviews he’s given, he doesn’t seem to have much familiarity or even really care about key issues in Oregon (in particular, the few interviews he’s given show that he lacks a nuanced understanding of issues like forest policy and drug decriminalization). He does not appear to have reached out to local leaders or tried to do any of the local network building you’d expect of a good representative. According to OPB he’s only voted twice in his adult life. He has no experience in government. And, of course, if elected he will very visibly owe his win to a single ultra-wealthy individual who is almost guaranteed to have business before the next congress in financial and crypto regulation.
Even if you think pandemic response is the only issue that matters, there’s little public evidence that he’s an expert: whatever consulting he did is private as far as I can tell. What he appears to be is a policy analyst studying AI governance. That’s not necessarily a bad thing but it’s not how he’s being sold. And frankly, I doubt it’s a pressing issue to most people in the district.
I also don’t see any thought about the other candidates in the race. It’s not your guy vs a potato: there are 3 credible, excellent choices. Reps Salinas and Leon are both children of immigrant ag workers who worked their way up through local politics. If you think pandemic response is the key issue, Dr. Harder is a highly experienced doctor who used to run the Oregon Medical Board. Medical and policy experience: maybe you still think your guy will be better, but by how much?
One final thought. I thought this group was supposed to be about deploying money more effectively. The amount that’s been spent here would have been more than enough to rent an office and pay a salary for Mr Flynn, an experienced lobbyist with a good Rolodex and support staff for several years. You could have had a dedicated smart pandemic response lobbying operation, not a 2% increased chance of your friend getting elected or whatever. How is your approach effective?

I would just add to this that it’s worth taking a few minutes to really think if there is anyone you might possibly know who lives in the district — or even a second-degree connection like a friend’s sister who you’ve never met. “Relational” communications are much more high-impact than calling strangers if it’s at all possible to find someone you have any connection with.
If you're wondering who you might know in Oregon, you can search your Facebook friends by location:
Search for Oregon (or Salem) in the normal FB search bar, then go to People. You can also select to see "Friends of Friends".
I assume that will miss a few, so it's probably worth also actively thinking about your network, but this is probably a good low-effort first start.
Edit: Actually they need to live in district 6. The biggest city in that district is Salem as far as I can tell. Here's a map.