New Delhi, Nov. 4 -- WASHINGTON - Democrats won control of both chambers of Congress in Tuesday's midterm elections, ending Republican control of Washington and setting up a period of divided government when the new Congress convenes in January.

NPR's analysis of Associated Press race calls found Democrats winning both chambers. The campaign was defined by voters' frustration over the cost of living and perceived public corruption, NPR reported.

Republicans entered Election Day with narrow advantages in both chambers, according to NBC News: 53-47 in the Senate and 219-214 in the House.

Democrats flipped Republican-held Senate seats in Iowa, Kansas, North Carolina, Ohio, South Carolina and Texas, according to CNBC, citing AP projections...