The national spotlight is on Indiana on Tuesday, as that state holds its primary election. The results could help seal the nominations for both Donald Trump and Hillary Clinton.
Coming off six straight wins, Donald Trump says a victory on Tuesday will be a crushing defeat for his main rival, Ted Cruz.
"Lyin' ted does not the temperament to be doing this. He is choking like a dog because he is losing so badly," Trump said.
With 57 delegates up for grabs, winning Indiana puts the GOP front-runner on track to clinch the Republican nomination. Trump only needs 242 delegates to do so.
On the Democratic side about 8,000 supporters showed up at a Bernie Sanders rally. He needs to win more than 80 percent of the remaining delegates to win the nomination.
Front-runner Hillary Clinton is already looking past the Indiana primary, saying she will recruit the help of her husband in her administration.
"I told my husband he's got to come out of retirement and be in charge of this because you know he's got more ideas a minute than anybody I know," Clinton said.
After Tuesday, the next big contest in the presidential race is California on June 7 when hundreds of delegates are up for grabs.