SEC primary update: Ted Cruz to join courting of Pat Robertson

Days until South Carolina Republican primary: 1. Days until South Carolina Democratic primary: 8.

Days until Nevada Democratic caucuses: 1. Days until Nevada Republican caucuses 4.

Days until SEC Primary: 11.

Virginia:

Ted Cruz will visit Regent University in Virginia Beach next Friday to be interviewed on stage by chancellor and influential evangelical broadcaster Pat Robertson. Donald Trump and Ben Carson are slated to appear separately in similar forums before SEC day. (Virginian Pilot)

Texas:

Julian Castro, the former San Antonio mayor, current U.S. Housing and Urban Development secretary and possible future Hillary Clinton running mate, went after Bernie Sanders's immigration policy on Thursday. (Dallas Morning News)

Ted Cruz's campaign dispatched former Gov. Rick Perry as an attack dog to accuse Marco Rubio of trying to "mislead voters." (Dallas Morning News)

Here is a cool breakdown of how Texas allocates its delegates, via the Dallas Morning News. One interesting wrinkle: Republicans assign them by vote tallies statewide and in 36 congressional districts, while Democrats use votes statewide and in 31 state Senate districts)

Alabama:

Marco Rubio's campaign opened a Birmingham office on Thursday. (WIAT-Birmingham)

Voters will still have to show photo ID in almost all circumstances to vote in the SEC Primary, after a federal judge denied a request for a preliminary injunction that would have loosened the state's ID requirement. (Associated Press)

Tennessee:

Marco Rubio will campaign in the Nashville suburbs Sunday. (The Tennessean)

Hillary Clinton has launched a six-figure ad television campaign targeting black voters in Memphis and Nashville, her first Tennessee ads of the campaign. (Associated Press)

Arkansas:

Marco Rubio will campaign in Little Rock on Sunday, his first Arkansas visit of the campaign. (Talk Business and Politics)