Many republican's are not going to vote. Absent from the Republican convention was much of the old guard, that included the Bushes, Romy, Ryan, many state legislators that never miss a convention. I doubt that Trump will make any attempt to bring these people and their supporters back into the fold. They are true Trump haters and there nothing he can do about it. He has to concentration on the relatively small number who are undecided and the weak Harris supporters.
Although democrats have probably never been as united as they are now. The Harris campaign has an entirely different problem than the Trump campaign. When Biden withdrew from nomination, 65% of the country did know who she was. Many of those people are supporting Harris simple because she is not Trump, she is younger, she's female, or she's multiracial. To solidify and increase that support she has to show these people who she is as a person and that she is qualified for the presidency. If she can do that, she is on a solid path to victory.
