A Kamala Harris / Mark Kelly ticket will demolish Trump and Vance.
Harris will hammer Trump on abortion and women's reproductive rights, which lost Republicans seats in Red states during the midterms. She'll also reinforce him being held liable for rape by a court. I think She'll better articulate the successes of the Biden admistration, while continuing to go on the attack vs Trump in the areas he can't defend. The areas that offend voters in the U.S.
Meanwhile, Mark Kelly's record is nearly untouchable. Elected a blue Senator in a purple state. A seat Democrats hadn't won since 1962. 30 year military veteran. Naval combat pilot with 39 combat missions in Iraq and Afghanistan. 2x Distinguished Flying Cross recipient. 2x astronaut with NASA, including pilot and mission commander of space shuttle Endeavor. Commander of the International Space Station. Wife is a Senator who survived an assassination attempt in 2011 after being critically wounded. He's extremely intelligent, well spoken, articulate and well liked. Only 60 years old and in excellent health... Neither Trump nor Vance could say a bad thing about the guy without alienating half their voting base that are pro military and all of whom dreamed of growing up to accomplish 10% of what Mark Kelly has done in his life time.
That ticket deeply appeals to the average American, who holds typical American values.