Kirsten Gillibrand, preparing for a second term as Democratic Senatorial Campaign Committee chair, says Democrats who won at least 55 Senate seats in 2026, flipping Iowa, South Carolina, Kansas, and North Carolina, could add seven more in 2028 to reach a filibuster-proof 60-seat supermajority, targeting Wisconsin and states Trump won three times. The article also notes progressive criticism of Chuck Schumer's primary strategy and Sherrod Brown's 2028 Ohio defense.