Even if Democrats have a watershed year nationwide, it probably won't happen in Texas, political experts say. Democrats chose not to challenge Republicans in dozens of races because at the filing deadline in early January, there was no hint that Republicans would appear to be in such political peril, said Cal Jillson, a political science professor at Southern Methodist University. "There are lots of people who don't want to walk into the airplane propeller," Jillson said. UNCONTESTED ELECTIONS 233 State seats Democrats are not challenging 136 State seats Republicans are not challenging 45 Tarrant County seats Democrats are not challenging...