2026 Midterm Election Update – October 15th, 2026
Bottom Line: Since the advent of the current two-party system (41 midterm elections), we've averaged the President's party losing 3 U.S. Senate seats and 28 seats in the House of Representatives in midterm election cycles. If that were to happen this cycle, Republicans would narrowly retain control the Senate, however Democrats would gain control of the House of Representatives – which they last held in 2022.
Republicans currently maintain a 53-47 majority in the Senate, meaning Democrats would need to flip four net seats to gain control, as Vice President JD Vance, as President of the Senate, would split 50-50 ties.
In the House of Representatives, Republicans currently hold a 218-214 majority (with two vacancies), meaning Democrats only need to flip three net seats to gain control of the chamber.
There are only three times that the incumbent President's party has gained seats (1934 during FDR's first term, 1998 during Bill Clinton's second term, and 2002 during George W. Bush's first term) thus only 3 out of 41 midterm elections have resulted in the President's party netting additional congressional seats. Here's another way of looking at it... History suggests there's a 93% chance Democrats will gain Congressional seats this cycle.
Will history repeat itself this year? There’s been one polling indicator which has been 100% accurate in midterm election cycles. The generic ballot. Since the advent of the polling age in the 1930’s, the party favored on Election Day on the generic ballot has fared best in every cycle. In the most recent cycle, the 2022 Midterm elections, Republicans were favored by 2.5% in the RealClear Politics average of polls and ended up winning 2.8% more of the vote nationally. So how about this cycle?
As of today, the generic ballot says:
- DEM +7.9% (vs. 7.8% October 7th)
We're now under three weeks away from Election Day with voters already voting in most states across the country, including in Florida. As of yesterday, over 5.4 million Americans had already voted in this year’s midterm elections based on data from the University of Florida’s Election Lab with Democrats significantly outvoting Republicans. Democrats have accounted for 51.4% of overall votes cast thus far, compared to 28.2% of the votes cast by Republicans.
With the majority of the votes thus far being cast by mail it’s not necessarily a surprise to see Democrats with a significant advantage, as Democrats have held a significant vote-by-mail advantage in recent cycles – while Republicans have significantly outvoted Democrats in-person. Nevertheless, the early margins by Democrats are significant, especially when weighed against a cycle that by every measure appears to favor them.
After a brief half point move for Republicans last week – we're back to Democrats polling with their largest generic ballot lead of the cycle. With the economy, and specifically affordability concerns, consistently shown as the top issue this cycle – elevated gas prices due to the impact of the Iran war continue to act as a massive headwind for Republicans.
Oil exports through the Persian Gulf have reached record levels over the past couple of weeks, after having exceeded prewar levels by the end of September. Oil prices (WTI crude) have fallen from a September high of $107 per barrel to $92 as of yesterday. If the trend continues into Election Day, the outlook for Republicans in close races across the country would likely improve.
At the peak of the Iran war Democrats enjoyed a 7.7% generic ballot advantage – we're now beyond mark. The current advantage exceeds 2018’s blue wave election cycle and is on par with 2006’s blue wave. Republicans saw some improvement as energy prices came down from the earlier year, however that's gone the other way as energy prices have been on the rise most recently. And with oil topping $90 once again – for three-month highs – it's likely that the trend currently will continue to be the Democrats' friend.
With the generic ballot splits as they exist today, Democrats would likely win the cycle solidly if the election were today – with a performance that would sit close to a wave election result nationally. Notably, in midterm election cycles since the onset of the polling age in the 1930's, whatever party has had an advantage on the generic ballot at the onset of September has fared best nationally on Election Day.
A wildcard adding to the uncertainty this cycle are numerous states redrawing maps in advance of the midterm elections – including Florida. Redrawn maps will all factor into outcomes in a potentially unprecedented way.
Retirements also have historically proved to be significant. Congressional incumbents running for reelection have won over 90% of the time. It’s common for members of Congress who feel especially vulnerable to retire as opposed to potentially losing an election. Often the party with the most retirements performs worse in midterms. On that note to date here are the announced retirements in the House of Representatives:
- Democrats: 22
- Republicans: 36
And in the United States Senate:
- Democrats: 4
- Republicans: 6
I’ll track these dynamics from time-to-time as we head into this year’s midterm election cycle.