(CNN)Hillary Clinton stepped up her criticism of Democratic primary rival Bernie Sanders in a series of interviews Wednesday morning, calling Sanders "a pretty reliable vote for the gun lobby" and charging that his health care proposals "will cost middle-class families and working families."
Clinton: Sanders 'reliable vote for the gun lobby'
Appearing on ABC's "Good Morning America" and NBC's "Today," Clinton was on the offensive against Sanders, targeting her upstart challenger after polls this week showed Sanders seizing leads in Iowa and New Hampshire, crucial early primary contests.
And as the Democratic race has tightened, open warfare has broken out between the Democratic opponents. Clinton has repeatedly hit the Vermont senator over his voting record on gun laws and opened a new line of attack on the cost of his health care policies -- arguments she continued Wednesday morning.
On "Today," the former Secretary of State said she wasn't nervous about Sanders' surge, and explained that "now it's time to draw some contrasts."
"One of the big ones, as you're aware, is on gun safety, where Senator Sanders has been a pretty reliable vote for the gun lobby," Clinton said. Sanders has in the past voted to support legal immunity for gun companies, which Clinton has used to batter her opponent.
Clinton also attacked Sanders call for a national single payer health care system. "He's introduced legislation nine times that laid out a very specific plan to take everybody's healthcare and roll it into a great big bundle and hand it to the states, but my view is we shouldn't be ripping up Obamacare and starting over, we should be building on it."
On "Good Morning America," Clinton again slammed Sanders' health care proposals.
"Tell the people how much it will cost them," she said. "Every analysis shows it's going to cost middle-class families and working families."
Clinton denied that her criticism was a product of the race tightening, insisting that she has "a different rhythm about how campaign goes" and that, so close to the first votes, "we're in the sprint and it is time to draw contrasts."
"We have differences on guns, on taxes, on healthcare," Clinton said, "and I think people should have that information before they go to the caucus or the primary."