Texas Senator Ted Cruz is on track to secure reelection in November against either of his top-polling Democratic rivals, according to a new University of Houston poll. The survey found that, in a straight fight between Cruz and Rep. Colin Allred, the leading Democratic candidate, the Republican incumbent would win by nine points. Alternatively, if Cruz faces Texas State Senator Roland Gutierrez, who is also running to be the Democratic nominee, he would secure victory by 10 points. * * * The University of Houston poll is a substantial improvement for Cruz from an Emerson College survey released earlier this...