The environmental activist is endorsing Clinton's presidential bid.
(CNN) - At different points during the presidential race, both Sen. Barack Obama and former Sen. John Edwards have alternately drawn comparisons to Robert F. Kennedy.
Kennedy's relative youth and optimism, as well his crusade against poverty and opposition to the war in Vietnam, all made for fitting comparisons to those two Democrats.
But one of Kennedy's sons, Robert F. Kennedy, Jr., is today endorsing Sen. Hillary Clinton - who happens to hold the same elected office once occupied by his father.
"I watched proudly as Hillary won over New Yorkers across the state in her race for the Senate seat my father once held," Kennedy said in a statement. "Since then, she's been reelected in a landslide victory and proven that she is ready to lead this nation from her first day in office. Hillary will inspire the real change America needs."
He added that Clinton had the "strength and experience" to end the war in Iraq and address the impact of global warming.
Kennedy, an attorney for the Hudson Riverkeeper and president of Waterkeeper Alliance, is perhaps best known for his environmental activism.
Kennedy stirred controversy last year with a lengthy Rolling Stone article suggesting that the 2004 election was stolen in Ohio, claiming that "the president of the United States was selected not by the uncontested will of the people, but under a cloud of dirty tricks."
UPDATE: Kennedy’s decision to campaign for Clinton in the Hawkeye State may dredge up some inconvenient reminders of comments he’s made on earlier visits, the New York Times points out. Five years ago, according to reports at the time in the Des Moines Register and the New York Post, the environmental activist told an Iowa audience that “large-scale hog producers are a greater threat to the United States and U.S. democracy than Osama bin Laden and his terrorist network.”
- CNN Political Producer Peter Hamby