Republicans are on the cusp of retaking control of the House, just one victory shy of the 218 seats the party needs to secure a majority. Control of the House would give conservative leverage to blunt President Joe Biden’s agenda and spur a flurry of investigations. But a slim numerical advantage will pose immediate challenges for GOP leaders and complicate the party’s ability to govern. The full scope of the party’s majority may not be clear for several more days — or weeks — as votes in competitive races are still being counted. Still, the party is on track to achieve 218 with seats in California and other states still too early to call.