Indiana has become the Alamo for the senator from Texas.

In an email to supporters, titled, “It’s all on Indiana,” Ted Cruz acknowledges it’s all coming down to the next primary state for his campaign.

In just five days, Hoosiers will cast their votes to determine which candidate will capture their 52 delegates.

This is the single, biggest, most important day for our campaign so far.

Carly and I are barnstorming Indiana to capture every last vote – as we fight to win the GOP nomination.

I can’t emphasize enough how important the vote in Indiana is going to be, and frankly, it could be the deciding factor.

Cruz adds, “Make no mistake, Indiana is absolutely pivotal.”

The bad news is if Trump wins all the delegates in Indiana, his nomination could be all but determined; but the good news is if we are going to win enough delegates in Indiana – Trump’s path to secure 1,237 delegates before the convention is virtually impossible.

“It’s all come down to this,” he ends.

A poll released Sunday shows Cruz trailing Republican front runner Donald Trump in the state by five percentage points — 40% to 35%.