Bustos represents a congressional district of Illinois that President Donald Trump won in 2016.
"We have gotten the US public a mandate to get results," Bustos said at a press conference after his victory, citing the party's mid-term victory. But she acknowledged, "We do not have a Senate, we do not have a White House," adding, "So it's very important that we lead a world-class political arm of House Democrats. "Absolutely imperative, we need to look at all the districts in the country, that's what we intend to do, and every battlefield will be protected and challenged, that's our role."
Bustos ran against representatives Denny Heck and Suzan DelBene, both from Washington State. The total votes were 117 for Bustos, 83 for Heck and 32 for DelBene.
New York representative Sean Patrick Maloney had also run for president of the DCCC, but he dropped his offer, a congressional advisor told CNN on Thursday.
Earlier in the week, Maloney had asked for a delay in the election of the president of the DCCC after being hospitalized due to a bacterial infection.
"We have 31 Democrats in Trump districts," Bustos said, adding, "We have to make sure we keep those difficult seats, I am one of them. a Trump District, but I won by 24 points I won the majority of Democrats from all Trump Districts all over the country, so I know how to do it.I know how to protect this House I know how to build this House. "
Democrats held a second day of in-camera elections Thursday to elect their leaders to the new Congress, while Democrats would control the House of Representatives after their victory over Republicans in the mid-term elections of 2018.
More election results on Thursday
In a separate election on Thursday, Rhode Island's representative, David Cicilline, was chosen to chair the House's Democratic Policy and Communications Committee, which is charged with helping craft a message that defines what the Democrats in the House represent.
Representatives Ted Lieu of California, Matt Cartwright of Pennsylvania and Debbie Dingell of Michigan were elected Co-Chairs of the CCPD.
CNN's Annie Grayer contributed to this report.