All eyes are on Indiana with the primary just days away.
Presidential candidates are aggressively campaigning throughout the state trying to win over voters.
This is one of the rare years when Indiana could have a large impact on shaping the presidential election.
What's On The Line For Republicans
The excitement in Indiana is at its height ahead of Tuesday's primary election.
There's a lot on the line for the presidential candidates visiting the state this week – especially Republicans.
Ted Cruz is focused on what he sees as a head-to-head fight with Donald Trump. Cruz and candidate John Kasich are working together in a coordinated effort to try and defeat Trump, with Cruz making multiple stops throughout the state this week.
To try and boost his chances, Cruz announced Carly Fiorina as his pick for vice president at a rally in Indianapolis.
"She knows firsthand, that the key to economic growth is not government and more and more government, it is rather less and less government," he said.
Donald Trump barely mentioned Cruz's pick during his visit to Indy the same day.
"And you have folks have a great opportunity here," Knight said. "You folks voting for Donald Trump and throwing him over the top."
Trump says he's confident he'll maintain a strong lead above other candidates.
"If we win Indiana, it's over," Trump said. "And I can only promise you it's over."
For Republicans, Indiana is the 2nd largest state left among the remaining primaries. Trump, even as the runaway front runner, still needs about 502 of the remaining delegates to accrue a majority. With Indiana as a winner-take-most state, Trump needs to win the state to stay on pace to win the majority.
Because Indiana is an open primary state, registered voters can vote for either party, which could benefit Trump.
"So people who identify themselves as Democrats can and probably will vote in the Republican presidential primary," says Leslie Lenkowsky, Professor at Indiana University's School of Public and Environmental Affairs. "We know, for example, Donald Trump has been drawing a fair number of Democrats in Republican primaries."
Why Indiana Is Important To Democrats
Hillary Clinton focused her efforts this week on northern Indiana, with a strong emphasis on middle class jobs and wages. She said revitalizing the manufacturing sector – an important industry in Indiana – is crucial.
"I have a plan to invest $10 billion to bring unions, workers, businesses, universities and the government together to create new manufacturing jobs," Clinton said.
Opponent Bernie Sanders drew a large crowd during a stop on Indiana University's campus this week.
It was an ideal for setting for him to lay out what he calls the most progressive agenda in U.S. history – His platform includes free college tuition financed by taxes on Wall Street, universal health care, and a $15-an-hour minimum wage.
He says in Indiana the top one percent is getting richer at the expense of other Hoosiers.
"Here in the state of Indiana, for example, since 2007, real median income has gone down by more than $4,700," Sanders said.
Indiana could be Sanders' last stand. He's counting on large turnout from college students.
A precarious situation to be in, Lenkowsky says, because but they vote at lower rates than any other age group.
"The question is whether or not those college students who are feeling the Bern will be more concerned to avoid bad grades than to go out and vote for somebody who by that time will be pretty close to out of the race," he says.
Sanders acknowledged that if he doesn't win Indiana, he'll still try to win every delegate he can before the Democratic National Convention. His campaign said Thursday Sanders was steering much of his remaining effort to California's primary in June.
