Republican Senator Ted Cruz may be at risk of losing his seat in Texas, an internal polling memo from a GOP super PAC aiming to flip the Senate has suggested. The memo from the Senate Leadership Fund (SLF), which was obtained by Politico, points to problems for Cruz as polling shows his Democratic challenger, Representative Colin Allred, closing the gap between them with less than a month before Election Day. The PAC's October polling had Cruz just 1 point ahead of Allred, when he had been...