Ted Cruz is Mace Tyrell
Contrary to all jolly appearances, Mace Tyrell is one of the most powerful political figures in Westeros. With the Lannisters running on fumes, he is currently head of the richest household, Master of Coin (a sort of king-banker), father of the queen, and under the reluctant protection of one of the most cunning minds around -- his mother, Olenna Tyrell. He's also a plum little man, eager to make proclamations and reeking of servitude for whoever will keep him at "the cool table." You can similarly imagine Ted Cruz cracking jokes about Canada in the senate cafeteria, aiming for self-deprecating and maybe coming off a little weird. Much like Tyrell palling around with the Lannisters, Cruz openly identifies with the Tea Party movement and has been endorsed by the Republican Liberty Caucus. Extremist reactionaries openly use him as a megaphone for legitimacy, and the candidate seems grateful for the opportunity each time. Yes, Ted Cruz is our unquestionable quill-fetcher.