- Hillary Clinton holds a 9-point lead over Bernie Sanders nationally, a new poll shows
- The NBC News/Wall Street Journal poll shows age is a defining line in the Democratic race
Clinton has 53% support among likely Democratic primary voters, compared to 44% for the Vermont senator, the poll shows.
The results come the day Michigan and Mississippi hold their Democratic primaries, and one week before critical contests in Florida, Ohio, Illinois, North Carolina and Missouri.
Age is a defining line between the two candidates. The survey shows Clinton besting Sanders among those aged 50 and older, 65% to 32%, while Sanders leads 60% to 38% among those younger than 50.
Clinton also has a big lead among non-whites, 63% to 34%, and women, 61% to 37%. There's also an age gap among women: Clinton wins those 50 and older by a huge 73% to 25% margin, while Sanders wins those under 50, 54% to 44%.
The survey of 410 Democratic primary voters was conducted March 3-6. Its margin of error is plus or minus 4.8 percentage points.