Final results from the Nevada Democratic caucuses are still coming in, but one thing is clear: Senator Bernie Sanders of Vermont had a big win. These charts and maps show how he pulled it off.

Mr. Sanders’s victory was built on support from a broad array of groups.

Entrance polls of Nevada caucusgoers show that he won among both white and Latino voters ...

Sanders Buttigieg Warren Klobuchar Biden Others

… and all voters under age 65 ...

Sanders Buttigieg Warren Klobuchar Biden Others

… and did well among both liberals and moderates ...

Sanders Buttigieg Warren Klobuchar Biden Others

… as well as voters whose most important issues were health care, climate change and income inequality.

Sanders Buttigieg Warren Klobuchar Biden Others Source: The poll was conducted by Edison Research for the National Election Pool.

Mr. Sanders won at least 10 of Nevada’s 16 counties, including the most populous ones.

Based on results reported so far, he carried Clark and Washoe counties — home to more than 85 percent of the state’s residents. Former Mayor Pete Buttigieg of South Bend, Ind., won five counties and is currently tied with Mr. Sanders in one.

Note: Nevada data is based on 60 percent of precincts reporting. | Sources: Election results and race calls from The Associated Press.

Partial precinct-level data shows how Mr. Sanders performed well in predominantly Hispanic neighborhoods in the eastern part of the Las Vegas area.

Mr. Sanders was voters’ first choice in each of the first three states and solidified his front-runner status in the Democratic primary race.