A major political shake-up hit Texas Tuesday night as longtime Democratic Congressman Al Green was defeated in a closely watched primary runoff by freshman Congressman Christian Menefee in Texas’ newly redrawn 18th Congressional District.

The victory marks the end of Green’s two-decade run in Congress and signals a generational shift inside Texas Democratic politics. Menefee, 38, defeated the 78-year-old Green after a bruising campaign fueled by redistricting, changing demographics, and growing calls for younger leadership within the Democratic Party.

The race became one of the most closely watched Democratic primaries in the country because both candidates were sitting members of Congress forced into the same district after Republican-led redistricting reshaped Houston-area congressional maps. The newly configured district combined portions of Green’s former district with the seat Menefee had only recently won in a special election earlier this year.

Menefee emerged as the stronger fundraiser and ran an aggressive ground campaign focused on economic issues, housing affordability, healthcare access, and mobilizing younger voters across Houston communities. Green, meanwhile, leaned heavily on his long civil rights record and national profile as one of former President Donald Trump’s most vocal congressional critics.

According to early reported totals, Menefee captured a commanding lead with nearly 69% of the vote counted shortly after polls closed, underscoring the scale of the upset.

Green’s defeat represents more than just a local political loss. For years, he served as a prominent figure in progressive Democratic circles, particularly during the Trump era when he repeatedly pushed impeachment efforts and became known for dramatic protest moments on the House floor. His exit now leaves another opening for a younger wave of Democrats seeking influence in Washington.

Menefee, a former Harris County Attorney and the first Black person elected to that office, framed his campaign as a forward-looking movement built around coalition politics and modern Democratic organizing. Supporters argued the district needed fresh leadership capable of connecting with a changing electorate.

Political analysts say the result also highlights how redistricting can dramatically alter careers overnight. Green’s longtime district was effectively dismantled during the latest map redraw, forcing him into unfamiliar political territory against a younger incumbent with strong local momentum.

Menefee is now expected to enter the general election as the heavy favorite in the heavily Democratic district, where Democrats traditionally dominate by large margins.