At DNC, Sen. Chris Murphy says 90% of Americans want expanded background checks for gun purchases

Democrats made a forceful argument for stricter gun control on the third night of the Democratic National Convention in Philadelphia.

One speaker, Sen. Chris Murphy of Connecticut, called for expanded background checks in particular.

"Listen, 90 percent of Americans want our background check system strengthened and expanded to cover more gun sales so that dangerous weapons don't fall into the wrong hands," Murphy said. 

Under current law, background checks are required in sales by federally licensed gun dealers, but the checks are not required for gun sales by private sellers.

National polls conducted over the past year consistently show that around 90 percent of Americans support some sort of expanded background checks for gun purchases. Here are a few examples of recent polls about background checks....
http://www.politifact.com/truth-o-meter/statements/2016/jul/27/chris-murphy/dnc-sen-chris-murphy-says-90-americans-want-expand/