The 22 percent who have a "very positive" view of Clinton is lower than any time since the 2008 presidential campaign, and the 21 percent who have a "very negative" view of her is higher than at any point since then.
Clinton is still viewed more favorably than unfavorably. Just 31 percent have a negative view of her.
The poll is not the first to show Clinton's image falling after stepping down as secretary of state. While in that job, polls showed as many as two-thirds of Americans approved of the once-polarizing first lady and former New York senator -- well more than at any point in her time in public life.
The NBC/WSJ poll also showed President Obama's approval rating hitting a new low of 42 percent.