He led the charge to form the first-ever Texas Historically Black Colleges and Universities (HBCU) Legislative Caucus in 2023 and now serves as its Chair.

[16] Reynolds first vied in the 2008 Texas House of Representatives Democratic party primary election for District 27, against the incumbent, Dora Olivo.

[26] Reynolds was arrested with U.S. congressman Al Green during a voting rights protest in front of the U.S. Supreme Court in Washington D.C. in 2021.

[27][28] He was one of many Democrats who had arrest warrants issued to them after they refused to join a special session ordered by Greg Abbott in August 2021.

[29] He founded the Texas House Progressive Caucus in 2021 and in 2022, he polled 70.3% of the votes to beat the Republican party candidate, Sohrab Gilani.

[8] He led the charge to form the first-ever Texas Historically Black Colleges and Universities (HBCU) Legislative Caucus in 2023.

[39] When his conviction was overturned in 2014, Reynolds offered a critique of the justice system of Montgomery County, saying "I have a very strong conviction I didn't get a fair trial, but even bigger I believe it's difficult for [an] African-American to get [a] fair trial in Montgomery County, Texas".

He said, "We need to close the economic gap here in Texas, working full time and trying to support a family on less than $15,000 a year is impossible.

[42] In November 2023, Reynolds was a signer of a letter urging the Biden administration to secure additional humanitarian aid[43] and push for a ceasefire in Israel's war on Gaza.

[44] He signed a later letter urging the administration "to reassess the unconditional aid provided to Israel" in the hope that they would "not hesitate to halt the provision of offensive weapons in order to prevent any future human rights violations.

[56] Reynolds was indicted for participating in a scheme to steer clients in exchange for kickbacks and was initially convicted in 2013, but a mistrial was declared.

[57][58] In 2015, he was convicted on five counts of illegal solicitation of legal clients on November 16, 2015, fined, and sentenced to one year in prison.

He was accused of winning a monetary settlement for a client whose daughter died in a car crash and then keeping her share of the money.

[62] Also in the same month, a Harris County judge ordered Reynolds to pay more than $95,000 to a couple after he had reached a settlement without informing them or having their consent.

[20] The next month it was reported that his law license had been suspended[63] by the Supreme Court of Texas's Board of Disciplinary Appeals.

[22] He listed he owed $3,000 in unpaid Houston-area tolls, $15,000 to the Texas Ethics Commission for failing to file financial disclosure forms,[23] and faced $1.3 million in debt.

[65] Between 2016 and 2019, Reynolds was ordered to pay significant settlements to former clients and owed substantial fines to the Texas Ethics Commission.