As I understand, Texas cannot secede, it can only break up into 4 more states. Would give 8 more Senate seats.
Either way, seems to me things are gonna get ugly.
Only if we wish to stay in the Union. If we don’t want to stay, well... Here’s Article 1, Section 2, Texas Constitution:
Sec. 2. INHERENT POLITICAL POWER; REPUBLICAN FORM OF GOVERNMENT. All political power is inherent in the people, and all free governments are founded on their authority, and instituted for their benefit. The faith of the people of Texas stands pledged to the preservation of a republican form of government, and, subject to this limitation only, they have at all times the inalienable right to alter, reform or abolish their government in such manner as they may think expedient.
On top of which, the right of secession far predates the formation of Texas. In fact, it predates the United States.