Of all the House Democrats undecided about voting to impeach President Trump, Tulsi Gabbard of Hawaii has the least incentive to stick to the party line.

The 2020 presidential candidate is giving up her seat to concentrate on her White House race, and she's long been an apostate against her party on some key issues.

In New Hampshire earlier this week, Gabbard, 38, said she remains "undecided" on whether she'll vote to impeach the president. That makes her one of the few Democratic lawmakers to voice skepticism about the pair of impeachment articles passed by the House Judiciary Committee on Friday, for abuse of power and obstruction of Congress.

And Gabbard is the only Democratic presidential candidate not vocally in favor of impeachment.

"I have had concerns for a long time about impeachment being pursued for partisan reasons," Gabbard said Monday. "Pursuing impeachment for partisan reasons is something that will only further divide an already divided country, and it actually undermines our democracy."

She later added that she is "undecided on how I am going to vote."

Gabbard is a former state representative, Honolulu City Council member, and current Hawaii Army National Guard major. She has routinely criticized her fellow Democrats for what she sees as their hawkishness on foreign policy and called the party's 2016 nominee, former Secretary of State Hillary Clinton," the " personification" of the Democratic Party's "rot."

A number of House Democrats have already signaled that they may not vote to impeach the president for allegedly abusing his powers and obstructing Congress over the scandal relating to his pressure on the Ukrainian government to dig up political dirt on Joe Biden, the former vice president and top-tier 2020 Democrat.

Gabbard's heterodox style, however, has not resulted in substantial support for her candidacy. A RealClearPolitics average of primary polls shows 1.4% of Democratic voters currently back her campaign. A survey released in October found that 28% of voters in her district supported her White House run, while 60% said she should drop out.