U.S. Republican presidential candidate John Kasich is polling in the low single digits nationally but may be poised to play the role of spoiler in Tuesday's New Hampshire primary by cutting into the support of higher-profile rivals such as Marco Rubio.

The Ohio governor, who is vowing to erase the U.S. budget deficit without shredding the safety net for poor Americans, has built a base of support among moderate Republicans and independent voters, who wield special clout in New Hampshire because they can vote in either party's primary.

Kasich, 63, has the support of about 12 to 14 percent of New Hampshire's voters in recent polls. The former congressman has staked the viability of his White House aspirations on New Hampshire, whose pivotal primary is part of the state-by-state contests to pick the party nominees for the Nov. 8 election to replace Democratic President Barack Obama.