Donald Trump faces the toughest test of his Republican presidential bid in tomorrow's Wisconsin primary, with a possible loss intensifying doubts about his long-range prospects. Ted Cruz has overtaken Trump in the state's polls, with the RealClearPolitics average showing the Texas senator ahead of the businessman by about 4 ppts Even with Trump favored to rebound in N.Y.'s April 19 primary a Wis. loss would reduce his chances of easily reaching the GOP's 1,237-delegate threshold by the time the
Source: Bloomberg Politics