Bernie Sanders, the Democratic Vermont senator running for president for a second time in 2020, is worth as much as $2 million, according to one estimate.
Sanders makes $174,000 a year from his senator's salary, and in 2015, his total reported assets amounted to less than $750,000.
However, the senator's income has seen a jump in the past couple of years.
Sanders made more than $1 million for the first time in 2016, largely thanks to book royalties, which earned him about $868,000 that year.
next slide will load in 15 secondsSkip AdSkip AdHe released "Our Revolution" in November 2016 and "Bernie Sanders Guide to Political Revolution" in August 2017.
In 2017, Sanders made around $1.06 million, more than $880,000 of that from book royalties.
Sanders reportedly owns three homes, including a four-bedroom house in Chittenden County, Vermont, that he bought with his wife, Jane, for $405,000 in 2009.
The senator also owns a one-bedroom townhouse in Washington, DC that he bought in 2007 for $488,999.
In 2016, Sanders bought an 1,800-square-foot house on the shores of Lake Champlain in Vermont for $575,000.
next slide will load in 15 secondsSkip AdSkip AdSanders served as Mayor of Burlington, Vermont, from 1981 to 1989, a position that earned him about $33,700 per year.
He previously worked as a carpenter, a documentary filmmaker, and a writer.