Final answer:
A primary election is held by political parties to determine their candidate, while a general election is when voters choose from the nominated candidates. The Democratic Party was dominant in Texas until the late 1960s, and since the 1990s, the Republican Party has been dominant.
Step-by-step explanation:
A primary election and a general election are two different phases of the election process in the United States.
A primary election is held by each political party to determine their candidate for the general election. In a primary election, party members cast their votes to select their preferred candidate.
The general election, on the other hand, is when voters choose from the candidates nominated by the political parties to hold public office.
The timeline for political party dominance in Texas since Reconstruction has varied.
The Democratic Party was dominant in Texas from the end of Reconstruction until the late 1960s.
However, since the 1990s, the Republican Party has been the dominant party in Texas.