I thought the mail coming this early was just a one candidate thing, but today I have been proven wrong. Although not an official candidate yet, Ron DeSantis is being promoted by a group called "Never Back Down, Inc." via an 8 page 8.5" x 11" booklet.
The typical snail mail is a post card. And in years past, when things really get going, they are half page postcards. But we have now already received three things in the mail and not a one is a typical half page postcard. A Hardcover book, a full page postcard, and an 8 page full-sized pamphlet from two campaigns have entered our mailbox and the caucuses are still more than 9 months away.
Contrary to the polls, I think the Republican side of things is NOT set in stone. Especially in Iowa. Trump lost to Cruz by a good amount in Iowa in 2016. Of course there were no opponents in 2020, but the enthusiasm was not quite as high that year. It will be interesting to see just how many candidates jump into the race on BOTH sides of the aisle.