The Ballot Brief
St. Helena Parish, Louisiana

District Attorney, 21st Judicial District

Cascio and Mack were on the November 3, 2026 ballot. Names follow official St. Helena Parish election filings. Certified results will appear here once the election office certifies the count. Louisiana certifies the general election by November 17, 2026; county canvasses are due November 9. Official results: voterportal.sos.la.gov/graphical.

About this race

Brad Cascio and Sherman Mack are on the November 3, 2026 open primary ballot for district attorney of the 21st Judicial District. Every voter in Tangipahoa Parish, Livingston Parish, and St. Helena Parish elects this seat, since Louisiana district attorneys are elected district-wide across the 21st Judicial District (La. R.S. 13:477). Louisiana's open primary elects a candidate outright with a majority of the vote; otherwise the top two finishers meet in a December 12, 2026 runoff. Listed from the Louisiana Secretary of State's official candidate list.

What this office does

District attorney or prosecutor. The district attorney is the chief prosecutor for the county or judicial district. The office decides which criminal charges to file, negotiates pleas, tries cases and, in many states, advises county government or handles child support and juvenile matters. The office sets local charging and diversion policies within state law.

This race. Every voter in St. Helena Parish votes on this seat.

This list comes from official election records but may be incomplete. It can miss, for example, late or petition candidates and some city, school and district races. Your official sample ballot is the final word.

We use AI to research and write election information. Errors are possible. Verify important details with official sources.

Louisiana › St. Helena Parish › District Attorney, 21st Judicial District

Who won? The official answer comes November 17.

Louisiana makes results final in three steps.
✓
Done · Nov 3
Votes were cast and counted
Election night totals are a first count, not the final one.
2
Happening now · by Nov 9
St. Helena Parish double-checks its count
The county reviews mail ballots, provisional ballots and any recount, then sends official totals to the state.
3
Next · Nov 17
Louisiana makes it official
The Secretary of State certifies the result. The winner appears on this page that day.

What local news is reporting

Not official yetUpdated November 5, 2026

This report is cited to the outlet that published it. We do not call races. Official running count: Louisiana official results.

District Attorney, 21st Judicial District
No report found yet

Reports are checked daily until Louisiana certifies on November 17; a certified winner replaces the report on that day.

Brad Cascio

Republican

Biography

Brad Cascio is an Assistant District Attorney for the 21st Judicial District, a post he has held since 2013, per his campaign site. He also serves as City Prosecutor for Denham Springs and French Settlement and sits on the boards of the Capital Area Law Enforcement Planning Commission and the Tangipahoa Council on Aging, per his campaign site. He is a graduate of Southeastern Louisiana University and LSU Law School, per his campaign site.

Sherman Mack

Republican

Biography

Sherman Mack, a former Louisiana State Representative and lifelong resident of Livingston Parish, is a candidate for District Attorney of the 21st Judicial District, per his campaign site. He has 25 years of civil and criminal litigation experience and is the senior member of the Mack Law Firm, the largest law firm in Livingston Parish. While in the Legislature he was appointed chairman of the House Criminal Justice Committee, where he worked on criminal-justice policy with the Attorney General's office and the state district attorneys association.

Next on the ballotDistrict Judge, 21st Judicial District Court, Division E

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Voting info and more

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Questions about this race

Who is running for District Attorney, 21st Judicial District in 2026?

2 candidates were tracked for District Attorney, 21st Judicial District in the November 3, 2026 runoff: Brad Cascio and Sherman Mack. Candidate information follows official St. Helena Parish election filings; verify with the official election office linked below.

When is the District Attorney, 21st Judicial District election in Louisiana?

Election Day was Tuesday, November 3, 2026. Certified results will appear on this page as the election office certifies them. Louisiana certifies the general election by November 17, 2026; county canvasses are due November 9. Official results: https://voterportal.sos.la.gov/graphical. Voting rules for Louisiana are on the Louisiana election hub at theballotbrief.com.

How do I see my exact St. Helena Parish ballot?

Enter your ZIP code in the lookup at theballotbrief.com for the statewide and congressional races, or a full street address to add the county, city and district contests for that location.

Who won the District Attorney, 21st Judicial District race?

Not yet reported by the outlets we checked; Louisiana certifies on November 17. We do not call races.

Verify this race

Candidate roster from official St. Helena Parish and state election office filings. Bios and priorities carry their attribution inline.

Cross-check with the official Louisiana election office, or see the full St. Helena Parish sample ballot and your exact ballot by address.

The rest of your St. Helena Parish ballot

2 tracked races in St. Helena Parish, Louisiana. Landed here from another county's search? Look up your own ballot below.

See all 2 St. Helena Parish races
Candidate profiles
Brad Cascio, full profileSherman Mack, full profileOfficial Louisiana election office