I've managed to get junk mail from both sides of the political spectrum now, which has been interesting (the conservative groups have had me on their mailing list forever, and I think a subscription to Harpers got me on the liberal groups).
Unfortunately, other than the issues involved, I can't really tell a big difference between fundraising styles. "Assume the reader is an idiot and send surveys with the most leading questions you've ever heard of, then ask for money." Usually, they say "Please send us $15 to process the survey, and your best gift."
The questions are absolutely, loaded, leading questions that would be laughed out of any courtroom or actual attempt at a statistically accurate survey. They're things like "Do you agree that racial injustice and white supremacy is the most important issue facing America today?" and "Do you agree that widespread, unchecked illegal immigration is on a path to destroy the nation we love?"
One group actually has survey stickers you respond with - "Yes, illegal immigration is a huge concern!" and "No, I'm a global elitist who supports illegal aliens voting in our elections and overthrowing our Democracy." Or something of the sort.
I guess it works or they wouldn't do it, but it's absolutely insane how these "surveys" are worded. I'm sure all they do is look for a check on the inside instead of "processing" them.
Oh, and just in case you're a drooling moron who doesn't know how to read a letter, the attached letter highlighting the supposed problems will reliably include at the bottom of the pages, "Over!" "Next page please!" "Flip over to continue reading!" and other insulting directions that more or less imply I don't know how to read a multi-page document. Since it's apparently against federal law to leave whitespace in such a fundraising request, they fill the last page with "PS: This is an URGENT issue that requires your rushed donation to STOP THEM from DOING EVIL THINGS." "PPS: Please rush your donation back!" "PPSS: I'm still going to put stuff here so there's no whitespace."
But I do tend to respond in long form, usually expanding on answers, and often include 2-3 typed pages in response when the survey lacks nuance. I doubt it ever gets read, but it's good practice for being able to expand on issues.
In any case, the ACLU isn't getting my money. Neither is the Heritage Foundation, and neither are any other groups that send me these "surveys" where the only important question is "But how much can you afford to give?"