RHIANNON ALLY: The Republican field in the 2024 presidential race is about to get even more crowded. Former New Jersey Governor Chris Christie is expected to announce he's running for president tomorrow, followed by a similar announcement by former vice president, Mike Pence, on Wednesday. - Hello, Iowa! RHIANNON ALLY: Nearly every Republican running for president, spending the weekend in Iowa appearing at a rally at the State Fairgrounds near Des Moines. - America is not a land of oppression. America is the land of opportunity. RHIANNON ALLY: Pence in jeans, boots, and a leather vest-- - I'm looking forward to being back in Iowa on Wednesday. RHIANNON ALLY: --hopping on the back of his Harley at an annual Roast and Ride, teasing his presidential announcement. - One of the reporters just asked me if about we're showing up more in Iowa, what our lane would be? I said, I'm more worried about the lane we're gonna be staying in today. [LAUGHTER] RHIANNON ALLY: Former President Donald Trump, the leading Republican presidential candidate, notably absent from the event, after spending two days in the state last week. Governor DeSantis, what message does it send that you're hear and Donald Trump isn't? - I'm just happy to be here. I think the folks here are great. RHIANNON ALLY: Meanwhile, another candidate, former South Carolina Governor Nikki Haley, taking part in a CNN town hall in Des Moines last night, calling on voters to choose a new generational leader. - It is time for us to leave the baggage of the past, the negativity to the past. - Also this week, North Dakota Governor Doug Burgum is expected to announce his candidacy for the Republican nomination.