Sen. Mark Pryor, D-Ark., speaks in Stuttgart, Ark., in August. Pryor's latest ad in his re-election campaign hammers his GOP opponent's position on the government shutdown. Danny Johnston/AP hide caption

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The Campaign to Defeat Barack Obama, a small-donor PAC, has launched a bus tour to reach conservative voters in hotly contested states, while trying to raise money to launch an anti-Obama TV ad. Yfat Yossifor/Courtesy of Mlive.com hide caption

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With Buses And Billboards, Small-Money Groups Try To Make A Mark
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Do Political Ads Actually Work?
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Will these Green Bay fans be cheering as much as they did during the 2011 Super Bowl when their beloved Packer games are interrupted by local political ads this fall? Matt Ludtke/Getty Images hide caption

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Between Touchdowns And Triple Jumps, Politicians Are Popping Up On Sports TV
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President Obama's re-election campaign has released four new Spanish-language ads, each ending with the phrase: "Esta eleccion si importa," which in English means, "This election does matter." barackobama.com hide caption

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