The John Bolton disclosure is completely irrelevant because it isn’t part of the House managers’ record.
They rushed the impeachment to meet a political calendar. If they now suffer from buyers’ remorse, too sad, too bad.
This was their mistake and they’re stuck with it.
If the senators are indeed jurors they should not be seeking information from sources other than what happens in the court room. There is good reason for this rule.
The usual rules, like “put your witness on a list - if you don’t, you can’t call at trial,” those have some narrow exceptions (in the interest of justice), but are by and large enforced.
In contrast, impeachment is an affair between the House and the senate. To run properly, there needss to be good faith. Or at least enough of it to overcome the inevitable cranks.
Our government does not operate in good faith, on anything. Neither does our press.
This case will eventually resolve on party lines, just like it started.