Politics

Republican presidential candidate Donald Trump greets supporters after the Republican presidential debate on Tuesday, Nov. 10, 2015, at the Milwaukee Theater in Milwaukee, Wis. CREDIT: Andrew A. Nelles for The Wall Street Journal

Republican presidential candidates Donald Trump and Sen. Ted Cruz, R-Texas, speak after the Republican presidential debate on Tuesday, Nov. 10, 2015, at the Milwaukee Theater in Milwaukee, Wis. CREDIT: Andrew A. Nelles for The Wall Street Journal

Republican presidential candidate Donald Trump reacts to a question during the Republican presidential debate on Tuesday, Nov. 10, 2015, at the Milwaukee Theater in Milwaukee, Wis. CREDIT: Andrew A. Nelles for The Wall Street Journal

The Republican presidential candidates during the Republican presidential debate on Tuesday, Nov. 10, 2015, at the Milwaukee Theater in Milwaukee, Wis. CREDIT: Andrew A. Nelles for The Wall Street Journal

Republican presidential candidate Donald Trump speaks during the Republican presidential debate on Tuesday, Nov. 10, 2015, at the Milwaukee Theater in Milwaukee, Wis. CREDIT: Andrew A. Nelles for The Wall Street Journal

Republican presidential candidate Sen. Ted Cruz, R-Texas, speaks during the Republican presidential debate on Tuesday, Nov. 10, 2015, at the Milwaukee Theater in Milwaukee, Wis. CREDIT: Andrew A. Nelles for The Wall Street Journal

House Speaker Paul Ryan watches the debate during the Republican presidential debate on Tuesday, Nov. 10, 2015, at the Milwaukee Theater in Milwaukee, Wis. CREDIT: Andrew A. Nelles for The Wall Street Journal

The audience listens during the Republican presidential debate on Tuesday, Nov. 10, 2015, at the Milwaukee Theater in Milwaukee, Wis. CREDIT: Andrew A. Nelles for The Wall Street Journal

Republican presidential candidate Sen. Marco Rubio, R-Fla., is tended to during a commercial break during the Republican presidential debate on Tuesday, Nov. 10, 2015, at the Milwaukee Theater in Milwaukee, Wis. CREDIT: Andrew A. Nelles for The Wall Street Journal

Republican presidential candidate former Florida Gov. Jeb Bush speaks during the Republican presidential debate on Tuesday, Nov. 10, 2015, at the Milwaukee Theater in Milwaukee, Wis. CREDIT: Andrew A. Nelles for The Wall Street Journal

Republican presidential candidates Sen. Marco Rubio, R-Fla., Donald Trump and Ben Carson speak during the Republican presidential debate on Tuesday, Nov. 10, 2015, at the Milwaukee Theater in Milwaukee, Wis. CREDIT: Andrew A. Nelles for The Wall Street Journal

Republican presidential candidate Sen. Marco Rubio, R-Fla., Donald Trump and Ben Carson during the Republican presidential debate on Tuesday, Nov. 10, 2015, at the Milwaukee Theater in Milwaukee, Wis. CREDIT: Andrew A. Nelles for The Wall Street Journal

Republican presidential candidates Mike Huckabee and Louisiana Gov. Bobby Jindal speak during the Republican presidential debate on Tuesday, Nov. 10, 2015, at the Milwaukee Theater in Milwaukee, Wis. CREDIT: Andrew A. Nelles for The Wall Street Journal

Wisconsin Gov. Scott Walker in the audience before the start of the Republican presidential debate on Tuesday, Nov. 10, 2015, at the Milwaukee Theater in Milwaukee, Wis. CREDIT: Andrew A. Nelles for The Wall Street Journal

Audience members file in before the Republican presidential debate on Tuesday, Nov. 10, 2015, at the Milwaukee Theater in Milwaukee, Wis. CREDIT: Andrew A. Nelles for The Wall Street Journal

Kevin Eppel and Lori Eppel, of Brookfield, Wis., take a picture in front of the stage before the Republican presidential debate on Tuesday, Nov. 10, 2015, at the Milwaukee Theater in Milwaukee, Wis. CREDIT: Andrew A. Nelles for The Wall Street Journal

Workers check their phones as the stage is prepared prior to the start of the Republican presidential debate on Tuesday, Nov. 10, 2015, at the Milwaukee Theater in Milwaukee, Wis. CREDIT: Andrew A. Nelles for The Wall Street Journal

Workers prepare the stage prior to the start of the Republican presidential debate on Tuesday, Nov. 10, 2015, at the Milwaukee Theater in Milwaukee, Wis. CREDIT: Andrew A. Nelles for The Wall Street Journal

Workers prepare the stage prior to the start of the Republican presidential debate on Tuesday, Nov. 10, 2015, at the Milwaukee Theater in Milwaukee, Wis. CREDIT: Andrew A. Nelles for The Wall Street Journal

Wisconsin Gov. Scott Walker speaks during a WSJ+ event on Tuesday, Nov. 10, 2015, at the Hilton Milwaukee City Center in Milwaukee, Wis. CREDIT: Andrew A. Nelles for The Wall Street Journal

Republican presidential candidate Ohio Gov. John Kasich greets guests during a campaign stop at the Billy Goat Tavern in Chicago on Monday, November 9, 2015. (Andrew A. Nelles/For The Chicago Tribune)

Republican presidential candidate Ohio Gov. John Kasich, left, holds a sign made by Arthur Siml, right, of Wheaton, Ill., and his grandson Carl Miller, 17, center, of Downers Grove, Ill., at the Billy Goat Tavern in Chicago on Monday, November 9, 2015. Siml and Miller have been collecting the autographs of numerous presidential candidates. Siml says the key is "a good sign and come early." (Andrew A. Nelles/For The Chicago Tribune)