In a YouGov poll conducted between July 25-29, 59 percent of Republicans surveyed said they would prefer a president under the age of 75. Trump celebrated his 78th birthday in June. Forty percent said they had no preference, and just two percent said they would prefer a president over the age of 75.
The DNC and RNC aren’t legally bound by the rules they made for themselves. There have been lawsuits in the last 8 years that have established that. They can both do what ever the fuck they want as long as they don’t piss off the really big donors.