From David Montejano, Anglos and Mexicans in the Making of Texas, 1836-1986, 39-41.
The second question requiring immediate attention was the political status of the Mexican in Texas. One of the liveliest debates in the Texas Constitutional Convention (1845) concerned whether or not the Mexican should be allowed the right to vote. The debate centered on whether the qualifying adjective ” white” should be retained in the constitutional provisions that described the voters of the state. The Harris County representative argued that the qualifier “white” should be kept, not because he feared the Spaniard; he welcomed them as he welcomed any portion of the Caucasian race that desired to settle in Texas. Rather he feared the mass immigration of “hordes of Mexican Indians”: “Silently they will come moving in; they will come back in thousands to Bexar, in thousands to Goliad, perhaps to Nacogdoches, and what will be the consequence? Ten, twenty, thirty, forty, fifty thousand may come in here, and vanquish you at the ballot box though you are invincible in arms. This is no idle dream; no bugbear; it is the truth.” The proposal failed, however, because of opposition by several Anglo-Texan allies and protectors of the Texas Mexican elite (like Col. Henry Kinney of Corpus Christi). José Antonio Navarro of San Antonio, the only Texas Mexican (and the only native-born Texan) at the Constitutional Convention, argued eloquently against the proposal.
In spite of the formal defeat of disenfranchisement at the convention, Mexicans in certain districts were denied the vote or allowed only limited participation. Corpus Christi merchant Henry Kinney observed that in several counties the practice immediately after independence had been to withhold the franchise from Mexicans, even though they may have fought against a people “of their own race.” Traveler Frederick Olmsted observed that, if the Mexicans in San Antonio voted, they could elect a government of their own; “such a step would be followed, however, by a summary revolution.” Where Mexicans did have the right to vote, protests and threats from Anglo-Americans were constant reminders of a fragile franchise.
A typical protest was exemplified by a hotly contested election for state representative from Nueces and Webb counties in 1863, where S. Kinney of Corpus Christi lost to Charles Callaghan of Laredo by a margin of thirty-five votes. The Corpus Christi Ranchero noted that Kinney was the choice of fifteen of sixteen voters where the English language was spoken and that “American men in an American country should have a fair showing in shaping the destinies of the country.” The Fort Brown Flag of Brownsville joined in the protest, editorializing that “we are opposed to allowing an ignorant crowd of Mexicans to determine the political questions in this country, where a man is supposed to vote knowingly and thoughtfully.” Disenfranchisement was the usual sentiment of disgruntled losers in electoral politics.
Where Texas Mexicans constituted a significant portion of the male vote, the politicians among the American settlers proceeded to instruct and organize the new voters. A common pattern wast the controlled franchise, where Mexicans voted according to the dictates  of the local patrón or boss. Since these political machines delivered sizable blocs of votes in state and national elections, the Anglo patrones acquired influence far beyond that usually accorded “backwater” county politicians.
Generally, the lesser bosses were members of the wealthy Mexican families who had entered the political arena to maintain and defend their traditional status, as in the “subrings” of Brownsville, San Antonio, and El Paso. But in all these instances, including places where Mexicans controlled most offices, as in Starr and Zapata counties, the figure of an Anglo boss legitimized Mexican political involvement. In the 1850s, the specific arrangements varied. Cameron County in the Lower Valley showed a nearly equal division of county commissioner positions. In Webb County, Anglos ran the county while Mexicans ran the city of Laredo. In El Paso County, the pattern was reversed, and Anglos ran the city while Mexicans ran the county.
The role of the Mexican elite as influential politicians was contingent, of course, on the presence of a large Mexican electorate. In San Antonio, where the Mexican population increasingly declined through the nineteenth century, Mexican representation on the city aldermanic council fell at an exponential rate after 1836. In 1837, for example, all but one of the forty-one candidates running for city elections were of Spanish-Mexican descent; a decade later there were only five. Between 1848 and 1866 each aldermanic council included one or two Mexican representatives; after 1866, however, even token representation was rare. Mexican political clubs remained active but constituted minor actors in the city’s affairs. Through the early 1900s, the Mexican voice in city politics was symbolically represented by Anglo officials with family ties to the Mexican upper class–the Lockwoods, Tobins, and Callaghans, for example. The  tabulation in Table 1, with city administrations organized roughly in periods of seven to ten years, gives a clear indication of the decline in power of the Mexican elite in San Antonio during the late nineteenth century.
[N.B. how in the Corpus Ranchero, “American” has become a purely ethnic and not a national term; an election in 1863 took place in the Confederacy, after Texas had been two years out of the United States of America.]
-  Quoted in P.S. Taylor, American-Mexican Frontier, p. 232.↩
-  Olmsted, Journey through Texas, p. 163; P.S. Taylor, American-Mexican Frontier, p. 230-234.↩
-  Quoted in J. Thompson, “A 19th Century History,” pp. 58-59. Another example is provided by Arnoldo de León, In Re Ricardo Rodriguez.↩
-  González, “Social Life,” p. 84; M. T. García, Desert Immigrants, pp. 157-158; De León, Tejano Community, pp. 23-49; J. Thompson, “A 19th Century History,” pp. 5, 28-31.↩
-  Remy, “Hispanic-Mexican San Antonio,” pp. 570; De León, Tejano Community, pp. 25, 28, 30-34.↩
-  This table was organized from information compiled by August Santleban, who attached an appendix of San Antonio’s city officials to his memoirs. The ethnicity of an alderman was based on surname, a fairly reliable method. See August Santleban, A Texas Pioneer, pp. 314-321.↩