Dozens of House races remain extremely close in the closing days of the midterms, according to New York Times Upshot/Siena College polls, making it easy to envision a Democratic blowout or a district-by-district battle for control that lasts for weeks.
The difference between the two outcomes will depend on whether enough Democratic candidates get over the top in the long list of Republican-leaning areas they’ve put into play. The Democratic gains in predominantly white, well-educated suburbs have stretched the Republican majority exceedingly thin. Fighting against this is partisan polarization, which could allow Republican incumbents to narrowly hold on to districts carried by the president. CONT.
Nate Cohn, New York Times