Wisconsin Gov. Scott Walker speaks at a news conference Monday in Madison, Wis., where he announced that he is suspending his Republican presidential campaign. Morry Gash/AP hide caption

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In 1999, then-Rep. John Kasich rode a dog sled after participating in the World Championship Sled Dog Derby award ceremony in Laconia, N.H. When he ran an "exploratory" campaign back then, few people knew who he was. Joel Page/AP hide caption

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Genie Nguyen came to the U.S. from Vietnam in 1975 and remembers voting for President Reagan. But, she said, she now feels Republicans have "gone too far to the right." Asma Khalid/NPR hide caption

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It's All Politics

How Asian-American Voters Went From Republican To Democratic

In the past two decades, the small-but-growing Asian-American vote has shifted dramatically in presidential elections.

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Thomas Checkler, owner of The Old Village Barber in Worthington, Ohio, discusses the impact that the barrage of political ads have on him and his customers during the 2012 presidential election campaign. Mike Munden/AP hide caption

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Addressable TV advertising technologies, which allow advertisers to selectively target audiences and serve different ads within them, are poised to play a bigger role in political campaigns. Matt Rourke/AP hide caption

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