Libertarian presidential nominee Gary Johnson is making a pitch to supporters of Democratic candidate Bernie Sanders Bernie SandersNYT editorial board remembers Ginsburg: She 'will forever have two legacies' Two GOP governors urge Republicans to hold off on Supreme Court nominee Sanders knocks McConnell: He's going against Ginsburg's 'dying wishes' MORE.

"For all those Bernie supporters out there, how about taking a look at the Libertarian ticket?" Johnson said Wednesday morning on CNN's "New Day."

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"Government can level the playing field. Crony capitalism is alive and well," said Johnson, who has noted that he agrees with much of what Sanders says.

He also went after Clinton's foreign policy credentials as secretary of State in the Obama administration. Sanders regularly slams her 2002 vote for the Iraq War.

"I do think that Hillary has been the architect of what is happening worldwide, and I don't think the world is any safer today," Johnson said.

Clinton on Tuesday night declared herself the presumptive Democratic nominee after winning several state contests, including California and New Jersey. Sanders said he'll continue campaigning until the Democratic National Convention next month.

Trump similarly made a pitch for supporters of Sanders on Tuesday night, saying he would welcome "with open arms" supporters of the Vermont senator "who have been left out in the cold by a rigged system of superdelegates."