Campaigns now begin strategic adjustments moving into political prime time after Labor Day
A total of 43 states have now conducted their primary elections, and we have already seen 12 incumbents – ten in the House and two in the Senate; seven Democrats and five Republicans – fail to win renomination. This is an unusually high number, particularly in the House, but whether it signals a coming major change general election is difficult to determine at this stage. Even so, the pattern offers several notable clues.
One of the most striking findings is the large average defeat margin (16 percentage points) among the twelve incumbents. Such lopsided results suggest an electorate that is, at minimum, frustrated with the current political status quo.
The fact that incumbents in both parties have lost – and that almost all did so by substantial margins – indicates that voters on opposite ideological ends are expressing dissatisfaction, albeit for different reasons. Democratic electorates are clearly gravitating toward more ideologically extreme candidates, while Republican voters appear discontent with what they perceive as slow pace of achievement from the officeholders they have routinely elected.
In the House, seven Democrats and three Republicans have been denied another term. Of the seven Democratic defeats, only Reps. Adriano Espaillat (D‑NY) and Shri Thanedar (D‑MI) lost by margins within four percentage points.
Among the remaining ten House defeats, the average margin of victory exceeded 17 percentage points. Two races set the high‑water mark: Rep. Al Green (D‑TX) losing to fellow Rep. Christian Menefee (D‑TX) by 38.6 points, and Rep. Dan Goldman (D‑NY) falling to former New York City Comptroller Brad Lander by 31.8 points.
Three defeats occurred within the past two weeks – Reps. Thanedar, Andy Ogles (R‑TN), and John Larson (D‑CT) – demonstrating that the trend is not confined to any single moment in the cycle. Incumbents have now fallen in March, May, June, and August, pointing to a broader and more persistent wave of discontent.
Of the twelve defeats, eight can reasonably be attributed to ideological or partisan motivations. On the Democratic side, incumbents who lost to candidates publicly identifying as Democratic Socialists – Reps. Espaillat, Goldman, and Diana DeGette (D‑CO) – were rejected because they were not far enough to the political left. Though Rep. Thanedar did not lose to a self‑identified Democratic Socialist, state Rep. Donovan McKinney (D‑Detroit) campaigned aggressively on the argument that the incumbent was not sufficiently liberal.
On the Republican side, the dynamic was the reverse: incumbents were deemed as not suitably conservative. This was most evident in Sen. John Cornyn’s (R‑TX) loss to Attorney General Ken Paxton, and retired Navy SEAL Ed Gallrein defeating Rep. Thomas Massie (R‑KY), aided by former President Trump’s very public criticism of Massie’s votes against the MAGA agenda.
Sen. Bill Cassidy (R‑LA) faced similar pressure to that of Rep. Massie, failing even to qualify for the runoff after finishing 20 points behind first‑place finisher Rep. Julia Letlow (R‑Start), who received President Trump’s endorsement. The President became actively involved in the race because he wanted to see Sen. Cassidy, who voted for impeachment in 2021, fail to win renomination.
Though ideology may not have been the principal factor in Rep. Dan Crenshaw’s (R‑TX) 15‑point defeat, challenger Steve Toth (R‑The Woodlands) clearly ran to Crenshaw’s right.
Two incumbents – Reps. Green and Larson – lost primarily due to age‑related concerns, as younger challengers capitalized on generational contrasts. About a dozen elderly Democratic incumbents were challenged by younger opponents who used the generation gap as a principal reason for voters to turn away from the incumbent and a pair of the upstarts were successful.
Two others fell for distinct reasons. Rep. Julie Johnson (D‑TX) lost to former U.S. Rep. Colin Allred largely because Allred was better known to Democratic voters and Johnson was forced into unfamiliar territory under the new Texas map. Rep. Ogles lost to former Agriculture Commissioner Charlie Hatcher (R) due to a campaign‑finance scandal and seeing substantially new territory, including the city of Memphis, added to his district under the new Tennessee redistricting map.
While each defeat has its own unique circumstances, the sheer volume and the average double-digit margin across the twelve races are already reverberating through general election campaigns.
It remains to be seen whether any additional incumbents will fall in the remaining seven primaries, and how many more may lose in November. Expect campaigns to begin making strategic adjustments as we move into political prime time after Labor Day.
