Jimmy Carter carved an unlikely path to the White House in 1976 and endured humbling defeat after one term. Now, six administrations later, the longest-living chief executive in American history is re-emerging from political obscurity at age 94 to win over his fellow Democrats once again. A peanut farmer turned politician then worldwide humanitarian, Carter is taking on a special role as several Democratic candidates look to his family-run campaign after the Watergate scandal as the road map for toppling President Donald Trump in 2020. 'Jimmy Carter is a decent, well-meaning person, someone who people are talking about again given the time that we are in,' Minnesota Sen. Amy Klobuchar said in an interview. 'He won because he worked so hard, and he had a message of truth and honesty. I think about him all the time.' Klobuchar is one of at least three presidential hopefuls who've ventured to the tiny town of Plains, Georgia, to meet with Carter and his wife, Rosalynn, who is 91. New Jersey Sen. Cory Booker and Mayor Pete Buttigieg of South Bend, Indiana, also have visited with the Carters and attended the former president's Sunday School lesson in Plains. Carter had planned to teach at Maranatha Baptist Church again Sunday, but he is still recuperating at home days after hip replacement surgery following a fall as he was preparing for a turkey hunt. 'An extraordinary person,' Buttigieg told reporters after meeting Carter. 'A guiding light and inspiration,' Booker said in a statement. Klobuchar has attended Carter's church lesson, as well, and says she emails with him occasionally. 'He signs them 'JC,'' she said with a laugh. It's quite a turnabout for a man who largely receded from party politics after his presidency, often without being missed by his party's leaders in Washington, where he was an outsider even as a White House resident. To be sure, more 2020 candidates have quietly sought counsel from Trump's predecessor, Barack Obama. Several have talked with Bill Clinton, who left office in 2001. But those huddles have been more hush-hush, disclosed through aides dishing anonymously. Sessions with Carter, on the other hand, are trumpeted on social media and discussed freely, suggesting an appeal that Obama and Clinton may not have. Unlike Clinton, impeached after an affair with a White House intern, Carter has no #MeToo demerits; he and Rosalynn, married since the end of World War II, didn't even like to dance with other people at state dinners. And unlike Obama, popular among Democrats but polarizing for conservatives and GOP-leaning independents, Carter is difficult to define by current political fault lines. He's an outspoken evangelical Christian who criticizes Trump's serial falsehoods, yet praises Trump for attempting a relationship with North Korean leader Kim Jong Un. Carter touts his own personal relationship with Russian President Vladimir Putin, another Trump favorite. 'I have his email address,' Carter said in September. For years, Carter has irked the foreign policy establishment with forthright criticism of Israel and its treatment of Palestinians. He confirms that he voted for Vermont Sen. Bernie Sanders, a democratic socialist, over Hillary Clinton in Georgia's 2016 presidential primary. In 2017, Carter welcomed Sanders, who's running again this year, to the Carter Center for a program in which the two men lambasted money in politics. Carter called the United States 'an oligarchy.' Yet Carter has since warned Democrats against 'too liberal a program,' lest they ensure Trump's re-election. Klobuchar credited Carter with being 'ahead of his time' on several issues, including the environment and climate change (he put solar panels on the White House), health care (a major step toward universal coverage failed mostly because party liberals thought it didn't go far enough) and government streamlining (an effort that angered some Democrats at the time). But she also alluded to how his presidency ended: a landslide loss after gas lines, inflation-then-unemployment, and a 14-month-long hostage crisis in Iran. 'Their administration was not perfect,' she said. Carter is enough of an enigma that he is the only living president not to draw Trump's ire or mockery, even if Republicans have caricatured Carter for decades as a failure. Trump and Carter chatted by phone this spring after Carter sent Trump a letter on China and trade. Both men said they had an amiable conversation. Buttigieg said he and Carter 'talked about being viewed as coming out of nowhere' and how Carter ran two general election campaigns entirely on the public financing system that now sits unused as candidates collectively raise money into the billions. Klobuchar recalled Carter telling her that 'family members would disperse to different states and then they would all come back on Friday, go back through the questions they had gotten.' Then 'he would talk about how he would answer them' so they'd all be prepared on their next trips, she said. It was 'a different era,' Klobuchar added, recalling that Carter said he felt 'high-tech because they had a fax machine on his plane.' Indeed, Klobuchar, born in 1960, wasn't old enough to vote for Carter until he sought a second term. Booker, 50, recalls voting for Carter, but in a grade-school mock election. Buttigieg, 37, wasn't even born when Carter left office. Nonetheless, Klobuchar said she regularly meets Iowans who remember Carter and his family members campaigning in 1975 before his rivals and national media recognized his strength. She said sometimes refers in the campaign to how her fellow Minnesotan and Carter's vice president, Walter Mondale, remembers their term: 'We obeyed the law. We told the truth. We kept the peace.' Whatever the reasons for the renewed attention, Carter allies say they hope the 2020 campaign is part of bolstering his reputation as a president. 'People are tired of hearing that he was a better ex-president than president,' said DuBose Porter, a former Georgia Democratic chairman who has known the Carters for decades. 'Of course he's done amazing things at the Carter Center, but he did great things for the country, and we're proud of it.' ___ Follow Barrow on Twitter at https://twitter.com/BillBarrowAP .