Most House Democrats in the next Congress will be new to the majority and an overwhelming majority of Republicans will be new to the minority — a dynamic that could create a steep learning curve for members as they grapple with party strategy and messaging changes under the new power structure.

Even more significant is that a majority of leadership candidates for both parties have not served in a Democrat-led House.

Republicans have controlled the House since 2011, and next year’s power shift will be new territory for old and new members alike.

Of the 227 Democrats who are guaranteed to be serving in the 116th Congress — 10 House races remained uncalled as of Tuesday morning — 58 percent will be new to the majority. That includes 79 members who have served in Congress already and 53 new members. Only 95 Democrats returning next year have experienced life in the majority.

The numbers of Republicans serving in the minority for the first time is even more staggering. Of the 198 Republicans elected so far, 73 percent will be new to the minority.