Attitudes of the electorate have changed almost not at all for this entire year.
Surveys say it is mostly about inflation with a secondary measured displeasure about all the prosecutions.
Surveys also say the critical truth that has disrupted the thinking in both parties. The electorate identifies as 45% independent and only about 26% each for Dems and GOP.
This is not about displeasure with cognition or displeasure with a debate performance. Replacing that candidate isn’t going to suddenly drag those Dems who became Independent back to the party.
Moving to independent measures the attitude about governance in general. The elites are being rejected, of either party.
So the debate has moved almost no numbers and ditto the gunshot. Those minds out there are not waiting to be changed by things like that. A party that has long term incumbents retire, erasing their elites, is a party that would get the attention of the growth of independents.
And of course this is not going to happen. The political careerists don’t have that principle.