Filibuster fight looms if Democrats retake Senate

Senate Minority Leader Charles Schumer (D-N.Y.) is facing competing pressure points as he weighs one of the biggest questions he’ll face if Democrats win back the majority: whether or not to nuke the filibuster.

Democrats — increasingly within striking distance of regaining the Senate — are plotting an ambitious agenda if they have control of Congress and the White House for the first time since 2010.

But the 60-vote legislative filibuster stands in the way of some of the biggest items on their to-do list, including ethics and...