U.S. Republicans campaign to stave off Democratic sweep in midterms

U.S. Republicans made a final push on Sunday to prevent Democrats from winning control of Congress in Tuesday's midterm elections.

Forecasting models suggest Democrats could win 230 of 435 House seats and 18 of 35 contested Senate seats.

An NBC News poll released on Sunday indicated that 60 percent of Americans disapprove of President Donald Trump's performance.