We say this based on historical trends and the current political mood.
asserted
We → say → trends
At this point in 2018, the last blue wave, Democrats led the generic ballot by roughly 7 points before gaining 41 House seats.
Moreover, the president’s party losing seats in midterms is essentially law in American politics: It has happened in all but three elections since the Roosevelt administration.
asserted
It → lead → administration
From 1934 through 2018, the president’s party lost an average of 28 House seats and four Senate seats, and over the past five midterms, the average net loss for the president’s party has been 31 House seats.
asserted
loss → lose → party
To be clear, Republicans could make up ground for a number of critical reasons: Democrats remain divided ideologically, lack a message and an identity other than being anti-President Trump, and Republicans have a considerable cash advantage.
uncertain
Republicans → make → advantage
That being said, by most measures, Democrats have the upper hand in the House and a genuine opportunity in the Senate.
asserted
Democrats → say → Senate
Recent polling suggests Democratic strength in several key Senate battlegrounds — enough to put the upper chamber in play in what was supposed to be a GOP-friendly map.
uncertain
what → suggest → play
In North Carolina, Democrat Roy Cooper leads Republican Michael Whatley by nearly 10 points in the polling average.
asserted
Cooper → lead → average
In Michigan, Democrat Abdul El-Sayed holds a narrow 3-point lead over Republican Mike Rogers, who had led during the spring and part of the summer as Republicans emphasized El-Sayed’s socialist lean, controversial statements, and his association with far-left influencer Hasan Piker.
asserted
Republicans → hold → Piker
In Maine, Democratic challenger Troy Jackson holds a slight edge over Republican Sen. Susan Collins, although the race remains effectively a toss-up per RealClearPolitics.
asserted
race → hold → RealClearPolitics
Victories in those three states alone would not give Democrats control of the Senate.
asserted
Victories → give → Senate
They need a net gain of four seats.
asserted
They → need → seats
The deeper problem for Republicans is that Democrats have expanded the map.
asserted
Democrats → expand → map
In Texas, which has not elected a Democrat statewide since 1994, James Talarico leads Republican Attorney General Ken Paxton — President Trump’s preferred candidate — by roughly 3 points.
asserted
Talarico → elect → points
Races in other reliably Republican states, including Iowa, South Carolina, Alaska, and even Kansas — which has not elected a Democratic senator in nine decades — also show Democratic candidates running far more competitively than expected.
asserted
candidates → include → decades
The Democratic Party’s weak brand — exacerbated by the growing influence of socialists and the far left — could alienate moderate voters, an argument Republicans are now making.
uncertain
Republicans → exacerbate → argument
Most of these polls remain within the margin of error.
asserted
Most → remain → error
But that should offer Republicans little comfort: The fact that these races are close at all reflects a national environment currently favoring Democrats.
asserted
races → offer → Democrats
That is not to predict that Democrats will win all, or even most, of these contests.
asserted
Democrats → predict → contests
Outside North Carolina, their leads are essentially ties, and polling has underestimated Republican support in several recent elections.
asserted
polling → underestimate → elections
The generic ballot also cannot be applied mechanically to an individual Senate race or House district, particularly when the number of competitive districts has declined sharply since 2018.
asserted
number → apply → 2018
The Cook Political Report currently rates 21 House races as toss-ups and another 21 as leaning toward one party or the other.
asserted
Report → rat → party
In 2018, 75 races were considered competitive — a decline driven by redistricting and growing political polarization.
asserted
races → consider → redistricting
It reflects voters’ deep frustration with the state of the economy.
asserted
It → reflect → economy
In Fox News polling, nearly four times as many Americans said they were falling behind financially as said they were getting ahead, 44% to 12%.
asserted
they → say → polling
Fox also found that 55% believed Democrats would do a better job handling inflation, compared with 40% who chose Republicans.
asserted
who → find → Republicans
Low presidential approval has often produced punishing midterms.
asserted
approval → produce → midterms
In 2010, when President Barack Obama’s approval stood at a still-weak 44%, Democrats lost 63 House seats and six Senate seats.
asserted
Democrats → stand → seats
Nevertheless, Republicans retain important advantages.
asserted
Republicans → retain → advantages
They have only just begun deploying their substantial cash advantage.
asserted
They → begin → advantage
The Democratic Party’s weak brand — exacerbated by the growing influence of socialists and the far left — could alienate moderate voters, an argument Republicans are now making.
uncertain
Republicans → exacerbate → voters
It is also possible that lower-propensity Republican voters heed Trump’s call to behave as if he were on the ballot and turn out.
asserted
he → heed → ballot
If they do, the election results could look markedly different from today’s polling.
uncertain
results → do → polling
Ultimately, both history and current data favor Democrats.
asserted
history → favor → Democrats
They are likely to win the House and have a better-than-even chance of capturing the Senate.
asserted
They → win → Senate
They are competitive in states that would ordinarily be out of reach and are running strongly across the core battlegrounds.
asserted
that → run → battlegrounds
But with three weeks remaining, a Democratic sweep is far from a foregone conclusion.
asserted
sweep → remain → conclusion
Republicans still have structural advantages and Trump’s unparalleled ability to mobilize his base.
asserted
Republicans → have → base