One GOP strategist working onHouse races said the Democrats’ performance could be pinned on the enthusiasm built by their Senate nominee, Rep. Beto O’Rourke, who lost to GOP incumbent Ted Cruz by just 3 points.

But others said the results cannot be simply attributed to O’Rourke’s coattails, pointing to the GOP’s bleeding of support in the suburbs nationwide.

“The national results certainly seem to imply that there is a potential shift in the suburban areas that is new,” said James Dickey, the chairman of the Texas GOP. “And that is broader than Texas alone, which certainly means it’s broader than any one candidate.”