Republicans Face Midterm Headwinds Amid Trump Approval Ratings

President Donald Trump's approval rating remains in the high 30s to low 40s, while the generic congressional ballot has favored Democrats by approximately 6 to 7 points for months.

Historical patterns for midterm elections suggest this combination would typically lead to Democrats winning the House and being within reach of the Senate. The party controlling the White House has historically lost an average of 22 House seats in midterms. Senate Majority Leader John Thune cited economic concerns as a factor for voters. However, three elements could help Republicans retain power: redistricting has reshaped the House map in the GOP's favor, a Supreme Court ruling provided a fundraising advantage to the Senate campaign arm, and the Senate map is structurally tilted toward Republicans.

New congressional maps in states like Texas and Florida have given Republicans a net gain of about 12 to 14 seats nationally, while Democrats have gained a few in California. This redistricting effort is the largest either party has undertaken in a generation. Democrats are concerned about a potential third impeachment effort, Supreme Court packing, and the end of the legislative filibuster if they regain control of Congress. Some Republicans, like Senator Jim Justice, have expressed concern that the war with Iran is damaging the party's prospects in the midterms.