Before the Democrats became the lunatic commie party, the Senate has a procedure called live pairing that allowed a mechanism to accommodate a member who was unable to attend a vote due to illness, travel, etc. A member from the opposite party who was expected to vote opposite to the absent member would become a live pair and would vote present thereby ensuring that the outcome was not affected by an absence.
Once upon a time when Senators were Gentlemen.
From memory, I think Australia’s Parliament does the same for both houses.
In Australia, the executive and legislative are combined. For example, the Minister of Defence will be a member of the Senate or the House of Representatives and thus will vote on legislation. However, the duties of a Minister will require them to be absent from Parliament (e.g. being overseas to attend meetings or the like). In cases like that, where there is a vote required, a member of the opposition will be refrain from the vote.
Democrats are not used to repub presidents fighting back without fear. That is completely new to them, and they can’t handle it. Which president said crooked Hillary, low IQ Maxine, Pocahontas, etc?