i want to thank poet of you, fred krupp, robert bryce.nk you. >> thank you. >> ifill: it's politics monday, and we have two takes this week on an increasingly competitive presidential race. as republicans prepare to debate tomorrow night in las vegas, religion and immigration have emerged as running themes. but are g.o.p. candidates, led by frontrunner donald trump, doing more harm than good when it comes to expanding the party's base among a growing subset of hispanic voters? william brangham traveled to washington state recently to explore one effort, bankrolled by the billionaire koch brothers, to recruit hispanics into the g.o.p.'s tent. >> brangham: it's election night, and avina gutierrez just made history. for the first time ever, voters in yakima, washington elected a hispanic candidate to their city council. not just one, in fact, three latinos won seats tonight. this, in a city where 40% of residents are hispanic. the 35-year-old democrat says tonight's victory is just another sign of the growing presence of latinos in politics.