Kevin Costner is doing a media blitz for former South Bend, Ind., Mayor Pete ButtigiegPete ButtigiegBiden's proposals spark phase 2 of supply chain crisis Biden returns restores tradition, returning to Kennedy Center Honors The Hill's Morning Report - Presented by Facebook - Congress avoids shutdown MORE as voting in New Hampshire's primary gets underway, and he's defending speaking out politically as a Hollywood star.

"I'm an actor. It's like, why should you be talking about politics? That's an easy place to go," Costner said in an interview Monday with WBZ-TV.

"But I pay taxes. I have children. It matters to me the life, the world that they're gonna inherit," the "Field of Dreams" star said. "And I don't like the direction we're going."

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Costner appeared at a campaign rally for Buttigieg on Monday in the Granite State on the eve of the nation’s first presidential primary. It's not the only campaigning the 65-year-old performer has done for the former mayor — he also took to the stage at a Buttigieg event in Iowa last month.

"Politics is a thing that a lot of us don't get involved in," Costner said Tuesday in an interview with MSNBC's Stephanie Ruhle, "and what we realize once in a while is by not getting involved, politics can run right over you."

"I like to believe his voice will carry through," Costner, who supported then-Sen. Barack ObamaBarack Hussein ObamaBiden Supreme Court study panel unanimously approves final report To advance democracy, defend Taiwan and Ukraine Press: GOP freak show: Who's in charge? MORE (D-Ill.) in the 2008 presidential election, said of Buttigieg. 

Buttigieg brought additional star power to New Hampshire, too. Actor Michael J. Fox was with the White House hopeful during an event over the weekend. "We have a very stable Rhodes scholar," the "Back to the Future" actor quipped of Buttigieg at Keene State College.

Other entertainers have also headed to the state to offer some high-profile support for their candidates of choice. Former "Sex and the City" actress and onetime New York gubernatorial candidate Cynthia Nixon spoke at a Monday campaign rally for Sen. Bernie SandersBernie SandersSenate rejects attempt to block Biden's Saudi arms sale Overnight Defense & National Security — Lawmakers clinch deal on defense bill White House 'strongly opposes' Senate resolution to stop Saudi arms sale MORE (I-Vt.), and Ashley Judd was in town rooting on Sen. Elizabeth WarrenElizabeth WarrenHillicon Valley — Presented by Connected Commerce Council — Incident reporting language left out of package Exporting gas means higher monthly energy bills for American families Senators turn up the heat on Amazon, data brokers during hearing MORE's (D-Mass.) presidential bid.

—Updated at 3 p.m.