Vice President Biden is slated to headline a fundraiser for New Hampshire Gov. Maggie Hassan (D), who heads the country's first primary state.
The event will fuel speculation about a potential Biden run for the Democratic Party's presidential nomination in 2016.
Hassan was a Hillary Clinton supporter in 2008 before President Obama won the Democratic nomination. Biden also invited the governor to the inauguration in January, according to WMUR.
Earlier this year, Biden spoke in South Carolina, another early primary state. In May, he helped raise money for candidate Elizabeth Colbert Busch, who lost a special election against former Gov. Mark Sanford.
Biden has declined to close the door on a run in 2016.
Polls show former Secretary of State Hillary Clinton is the overwhelming early favorite for the Democratic nomination, but she has yet to weigh in on a bid.