Buttigieg releases ad in Iowa amid rise in polls

Democratic presidential hopeful Pete ButtigiegPeter (Pete) Paul ButtigiegJuan Williams: Honesty, homophobia and Mayor Pete Democrats on edge as Iowa points to chaotic race Democrats debate how to defeat Trump: fight or heal MORE's campaign on Tuesday released a TV ad in Iowa highlighting national unity as he rises in state and national polls. 

The ad, which is Buttigieg's sixth in the state, includes excerpts from his speech at last week's Liberty and Justice Celebration in Des Moines. 

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"The point is what lies on the other side of the fight," the South Bend, Ind., mayor said in the speech. "The hope of an American experience defined not by exclusion but by belonging. That is what we are here to deliver."

Buttigieg has risen from the middle of the Democratic primary's field to fourth place, trailing former Vice President Joe BidenJoe BidenImpeachment week: Trump probe hits crucial point Trump DACA fight hits Supreme Court Juan Williams: Honesty, homophobia and Mayor Pete MORE and Sens. Elizabeth WarrenElizabeth Ann WarrenJuan Williams: Honesty, homophobia and Mayor Pete Trump DACA fight hits Supreme Court Democrats on edge as Iowa points to chaotic race MORE (D-Mass.) and Bernie SandersBernie SandersJuan Williams: Honesty, homophobia and Mayor Pete Democrats on edge as Iowa points to chaotic race Democrats debate how to defeat Trump: fight or heal MORE (I-Vt.). 

A New York Times-Siena College survey released last week showed Warren leading the field in the Hawkeye State with the support of 22 percent of respondents, followed by Sanders at 19 percent and Buttigieg and Biden at 18 and 17 percent, respectively. 

Meanwhile, Buttigieg made gains in a Washington Post-ABC News poll released on Sunday, but still trails Biden, Warren and Sanders nationally. 

Buttigieg made headlines over the weekend when he suggested that the Democratic primary could turn into a two-way race between him and Warren. 

He later walked back the remarks, however, saying he did not think the comments came out right before emphasizing the strength of the other contenders in the race.