House Republicans struggling to preserve their majority are facing a wave of Democratic money and enthusiasm in suburban districts across the country, as well-educated and moderate voters consider new checks on President Trump.
An analysis of the types of districts in play shows that two-thirds of the Republican-held seats that a top election handicapper sees as vulnerable are in suburban areas.
That has Republicans on defense in an area where Trump has bled support, even in the 2016 election he won.