They haven’t even had the convention yet. Don’t use up all your ammunition in the beginning of the battle. You hammer the opposition in the last 30 days so the voters will remember. After all, the American public has a severe attention span disorder. Things said and done today will be forgotten within days.
Used to be back in the days where people read newspapers and mail, or watched TV news ~ that’s what you would do. Now, you want to lay the landmines early, replenish them from time to time, and just keep that up ~ eventually you’ll get the story over to just about everybody.