The rise in incomes could support the party’s hopes of keeping Democrats from winning the 23 seats they need to seize control of the U.S. House of Representatives and thwart Republican President Donald Trump’s agenda.
The party of sitting presidents tends to lose seats in U.S. congressional midterm elections and some analysts believe Trump’s low national approval rating could drag on Republican candidates.
The Census data, part of the bureau’s annual American Community Survey, showed that median incomes grew 6 percent or more last year in 14 battleground districts, more than a percentage point higher than the national median income gain.
All 14 of the districts are held by Republicans. The party’s candidates this year have made the strengthening U.S. economy under Trump a dominant theme in their campaigns for the Nov. 6 elections.