Lauren Underwood, a nurse and health policy expert, easily topped a seven-candidate field to claim the Democratic nomination for Congress in the 14th District on Tuesday.

Underwood unofficially held 57.5 percent of the vote with about 75 percent counted. Montgomery mayor Matt Brolley and 2016 nominee Jim Walz trailed with 13.7 and 9.9 percent, respectively.

She’ll face incumbent Republican Rep. Randy Hultgren in the November general election to represent a six-county district that stretches from the Wisconsin state line through the far western suburbs and into Kendall County.

Underwood, an African-American woman, won in a district that is 85 percent Caucasian.

Hultgren was unopposed in the GOP primary.