In the TX-18 Democratic primary runoff set for May 28, traders heavily favor Harris County Attorney Christian Menefee at 74% implied probability over incumbent Rep. Al Green (24%), driven by Menefee's first-round lead of 36% to Green's 33% on March 5, which propelled him as the momentum frontrunner. Menefee's superior fundraising—over $1 million raised versus Green's under $300,000—and endorsements from Houston-area Democratic leaders, including former Mayor Sylvester Turner, have solidified his edge among progressive and younger voters seeking change from Green's two-decade tenure. Recent polls, such as a mid-April University of Houston survey showing Menefee ahead 52%-38%, reinforce this positioning amid low-key campaigning, while Green's congressional experience on Financial Services sustains his base support. Amanda Edwards and Gretchen Brown trail after weak first-round showings.
Experimental AI-generated summary referencing Polymarket data · UpdatedChristian Menefee 80.2%
Al Green 21.8%
Amanda Edwards <1%
Gretchen Brown <1%
Christian Menefee
73%
Al Green
25%
Amanda Edwards
<1%
Gretchen Brown
<1%
Christian Menefee 80.2%
Al Green 21.8%
Amanda Edwards <1%
Gretchen Brown <1%
Christian Menefee
73%
Al Green
25%
Amanda Edwards
<1%
Gretchen Brown
<1%
If no nominee is announced by November 3, 2026, 11:59PM ET, this market will resolve to "Other".
The resolution source for this market will be a consensus of official Democrat sources, including https://democrats.org/.
Any replacement of the nominee before election day will not change the resolution of the market.
Market Opened: Feb 4, 2026, 5:13 PM ET
Resolver
0x2F5e3684c...Resolver
0x2F5e3684c...In the TX-18 Democratic primary runoff set for May 28, traders heavily favor Harris County Attorney Christian Menefee at 74% implied probability over incumbent Rep. Al Green (24%), driven by Menefee's first-round lead of 36% to Green's 33% on March 5, which propelled him as the momentum frontrunner. Menefee's superior fundraising—over $1 million raised versus Green's under $300,000—and endorsements from Houston-area Democratic leaders, including former Mayor Sylvester Turner, have solidified his edge among progressive and younger voters seeking change from Green's two-decade tenure. Recent polls, such as a mid-April University of Houston survey showing Menefee ahead 52%-38%, reinforce this positioning amid low-key campaigning, while Green's congressional experience on Financial Services sustains his base support. Amanda Edwards and Gretchen Brown trail after weak first-round showings.
Experimental AI-generated summary referencing Polymarket data · Updated

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