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Texas Sen. Ted Cruz is the only viable alternative to front-runner Donald Trump in the Republican presidential primary, Gov Scott Walker said Wednesday hinting at a possible endorsement.

"If you're someone who is uneasy with the front-runner right now, there's really only one candidate," Walker said in a taped interview that aired on WTMJ Wednesday morning. "Ted Cruz is the only one who's got a chance other than Donald Trump to win the nomination statistically, and my friend Gov. (John) Kasich cannot."

Walker's comments come on the same day Cruz and Kasich are hosting rallies in the Milwaukee area ahead of the state's April 5 presidential primary. The governor has not yet made an endorsement and said he will decide after Easter.

Kasich is making a concerted effort to prove he can win contests outside his home state, while Cruz seeks to whittle the race to a two-man contest against front-runner Donald Trump.

Several anti-Trump Republicans in the state have thrown their support behind Cruz, though Kasich has also picked up high-profile endorsements.

Walker also said Wednesday that Republicans shouldn't be wary of an open convention if one of the GOP candidates fail to secure the necessary 1,237 delegates to earn the nomination at the convention in July