The announcement comes after GOP leadership urged the congressman to abandon his bid, after he admitted to an affair with a former aide who died by suicide.
Rep. Henry Cuellar and Republican Webb County Judge Tano Tijerina won their primaries in the 28th Congressional District, which is nearly 90 percent Hispanic.
Rep. Gonzalez, the Democratic incumbent in District 34, is seen as more vulnerable than Rep. Cuellar in District 28, but neither district is leaning red.
The announcement comes after GOP leadership urged the congressman to abandon his bid, after he admitted to an affair with a former aide who died by suicide.
Rep. Henry Cuellar and Republican Webb County Judge Tano Tijerina won their primaries in the 28th Congressional District, which is nearly 90 percent Hispanic.
Rep. Gonzalez, the Democratic incumbent in District 34, is seen as more vulnerable than Rep. Cuellar in District 28, but neither district is leaning red.