The argument most commonly made in the filibuster's favor is crudely partisan: 'Our side may be in the majority now, but someday it will be in the minority, and when that happens we'll want to block the other side's extremist agenda.'

Quote

“The argument most commonly made in the filibuster's favor is crudely partisan: 'Our side may be in the majority now, but someday it will be in the minority, and when that happens we'll want to block the other side's extremist agenda.'”