U.S. Vice President Mike Pence on Thursday urged fellow Republicans to get behind the party's "last best chance" to repeal and replace Obamacare as congressional leaders scrambled to secure enough support ahead of a planned vote next week.

Pence, in an interview on Fox News, said Republicans were close to dismantling the 2010 healthcare law passed by former Democratic President Barack Obama.

"This may well be our last best chance to stop and turn around," he said.