Republicans hold a $400 million midterm spending edge as Democrats narrow their map

Republican campaigns and allied groups hold a roughly $400 million spending edge over Democrats with a little more than three weeks left before Election Day. The gap is forcing Democratic strategists to choose which races to defend and which long-shot contests to leave alone.

Where the money is going

Ad tracking firm AdImpact puts the overall Republican lead at about $400 million for the cycle. In competitive Senate contests alone Republicans had spent about $563 million on advertising through September while Democrats spent about $375 million.

Since early September Republican groups have booked more than $700 million in new congressional ad reservations. Democrats booked more than $430 million in the same window.

Pressure on Democrats

House Democrats asked donors for an extra $17 million by Oct. 22 to close what they call winnable races. A memo from the party's House campaign arm warned that Republican super PACs are flooding districts with money the party cannot match dollar for dollar.

Senate-focused Democratic groups say they are active in nine battleground states yet still being outspent. They describe many of those contests as transactional and expensive in the final stretch.

GOP firepower

Much of the Republican surge comes from the Senate Leadership Fund, a presidentially aligned super PAC and other outside groups. Party officials say the cash edge is aimed at protecting slim majorities in the House and Senate.

Democrats still see openings in red-leaning states and districts as voters worry about prices and foreign conflicts. The spending gap makes widening that map harder even when polls look competitive.

Why it matters now

Control of both chambers is on the line. Republicans hold a narrow House majority and a 53-47 Senate edge. Historical midterm patterns usually favor the party out of power but a large late cash advantage can blunt those swings in close races.