Democrats have the kind of national polling lead that normally produces champagne talk in Washington.
But buried underneath that headline advantage is a turnout warning that could make Election Day far less comfortable than the top line suggests.
The new NPR/PBS News/Marist poll gives Democratic congressional candidates an eight-point lead among likely voters, 52% to 44%.
Among registered voters, the Democratic advantage stood at 10 points. That was down slightly from the party’s 12-point lead in Marist’s September survey, but it still placed Republicans in a deep national hole one week before Election Day.
Independents who were likely to vote broke for the Democratic congressional candidate by 52% to 39%. A majority of all likely voters also said they preferred candidates promising change over candidates offering experience and a proven record.
Those are strong numbers for Democrats. The detailed tables, however, show that the composition and intensity of the remaining electorate could still matter enormously.
Marist laid out the national choice here:
The first warning sign appears when the poll separates people who have already voted from those who still have to cast a ballot.
Among respondents who said they had already voted, Democrats held a massive 68% to 31% advantage.
Among those who had not yet voted, however, the race was tied at 48% apiece.
That does not erase the Democratic votes already banked. It does show why a national lead can become less secure if one side dominates the remaining Election Day electorate.
The second warning sign is generational.
The poll’s underlying tables show that only 42% of likely voters under 45 described themselves as “very enthusiastic” about voting. That figure jumped to 68% among voters 45 and older.
Likely voters under 45 favored Democratic congressional candidates by 22 points, 58% to 36%. In other words, the group giving Democrats one of their largest margins was also much less intensely enthusiastic than older voters.
The pattern extended into other Democratic-leaning groups. Just 53% of nonwhite likely voters said they were very enthusiastic, while white college-educated women came in at 56%.
By comparison, 68% of MAGA voters described themselves as very enthusiastic.
That is the real vulnerability hiding behind the eight-point lead. Some of the voters supplying the Democratic margin may not show up at the same rate as the most committed Republican voters.
There is an important reality check here.
The same poll found Democrats more enthusiastic than Republicans overall. Ninety-one percent of Democratic likely voters said they were at least somewhat enthusiastic, compared with 86% of Republicans.
On the stronger “very enthusiastic” measure, Democrats led 71% to 61%.
The Democratic Party has not lost interest in the election. The danger sits inside a coalition containing several turnout-sensitive groups at the exact moment Democrats need every part of that coalition to deliver.
President Donald Trump remains a major headwind for Republicans in the survey.
Marist found that 44% of likely voters saw their congressional ballot primarily as a vote against Trump, while 21% saw it as a vote for him. The president’s job approval stood at 40%, with 59% disapproving.
A separate Fox News poll released Tuesday also showed the political pressure Republicans are facing one week before the midterms:
Those numbers explain why Democrats remain favored in the national environment. They also explain why Republicans are spending the closing stretch arguing that the polls may once again be missing part of their vote.
Axios recently examined the industry’s continuing problem with Republican nonresponse. Pollsters can weight the Republicans who do answer surveys more heavily, but that adjustment assumes those respondents resemble the Republicans who refuse to participate.
Rice University political scientist Matthew Tyler explained that the adjustment can backfire when the Republicans willing to answer surveys are also more open to voting Democratic than the Republicans who never respond. In that situation, weighting the available GOP respondents more heavily can still make a Democratic wave look larger than the electorate that ultimately appears.
Likely-voter screens create another layer of uncertainty. YouGov’s chief scientist found Democratic leads ranging from six to 16 points in one September survey depending on how the pollster defined a likely voter, and he described the largest margin as almost certainly overstated.
Most pollsters still gave Democrats the edge. Their warning was narrower but important: the size of that edge depends on assumptions that cannot be fully tested until ballots are counted.
At the same time, the historical record does not justify blindly assuming every midterm poll is wrong in the GOP’s direction.
Nate Silver’s review of polling errors found that polls underestimated Republicans in all three Trump-era presidential elections. But the past two midterms were largely accurate and unbiased nationally, even while individual states and regions produced misses.
Silver’s data put the average polling bias in presidential elections since 2016 at nearly four points toward Democrats. For midterms over the same period, the average national bias was close to zero.
His forecast also accounts for the possibility that polling errors across multiple states move together. A Democratic lead therefore raises the party’s odds without guaranteeing that every close race will break the same way.
That distinction matters because Trump is driving the political environment in 2026, but he is not personally on the ballot.
The question is whether his lower-propensity supporters turn out for Republican congressional candidates without his name at the top of the ticket—and whether younger and nonwhite anti-Trump voters turn their polling preferences into actual ballots.
Democrats also showed a curious confidence gap.
An overwhelming 98% of Democratic likely voters said they planned to support their party’s candidate, yet only 81% believed the Democrat in their district would actually win. Republicans had a smaller gap: 94% planned to vote Republican and 84% expected the GOP candidate to win.
Marist separately asked voters who they thought would prevail, regardless of their own preference:
Nationally, 51% expected the Democrat in their district to win, while 46% expected the Republican.
The poll surveyed 1,289 registered voters from October 19 through October 20 using live phone interviews, text messages and online responses. The likely-voter results carried a margin of error of plus or minus 3.8 percentage points.
Democrats clearly enter the final week with the advantage.
But an advantage is not a result, and a poll is not a ballot.
If the younger and less intensely enthusiastic parts of the Democratic coalition stay home while committed MAGA voters turn out, the eight-point lead could shrink quickly where it matters most.
That is why the top line looks great for Democrats—and why the numbers underneath it should keep them from getting comfortable.
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[ H/T WLT Report ]
