House Democrats are adjusting battle plans for defending their vulnerable majority as the decennial redistricting process puts previously safe incumbents in the Republican Party’s crosshairs.

On Thursday, the Democratic Congressional Campaign Committee revealed it was moving Oregon Rep. Kurt Schrader and Nevada Rep. Dina Titus to the party’s “Frontline Program” for politically endangered incumbents. Frontline members, who now number 26, are set to receive extra attention and resources from the House Democratic campaign as they move to fend off Republican challengers.