Barack ObamaBarack ObamaDonald Trump will be president — but a President Trump may not be what voters expected American astronaut John Glenn helped others rise all his life Obama to appear on 'The Daily Show' with Trevor Noah MORE and Hillary ClintonHillary Rodham ClintonTrump picks Goldman Sachs president for National Economic Council director: report C'mon people: It's not Jill Stein's fault that Hillary Clinton lost the election Breitbart blasts Trump's Labor pick MORE both released new TV ads today, and even as both campaigns have come to focus heavily on the economy in recent months, the candidates have stuck to the messages they created at the outset of the nomination race.

In Obama's ad, which will begin airing today in Pennsylvania, Sen. Bob CaseyBob CaseySenate Democrats dig in as shutdown approaches Overnight Finance: Senate Dems dig in as shutdown looms | Trump taps fast-food exec for Labor chief | Portland's new CEO tax Overnight Finance: Funding bill expected tonight | Trump takes on Boeing | House rejects push for IRS impeachment vote | Dow hits new high MORE (D-Pa.) addresses working-class frustration--an issue that has brought criticism to Obama over the past week.

Obama has come under criticism for a comment, made April 5 at a San Francisco fundraiser, about voter frustration: Obama said that working-class voters stick to divisive issues like religion and gun rights because they are "bitter." Casey says those frustrations are caused by economic downturn and political division, and that Obama can bring change and end political divisiveness--the central theme of Obama's campaign from the start.

Hillary Clinton, in a new ad for North Carolina, hearkens back to her original campaign slogan: "Let the conversation begin." In Clinton's early campaign stops, the New York senator offered "conversation" as an alternative to Bush administration policies, often talking about foreign policy and the war in Iraq, which she dubbed "irresponsible."

Clinton starts her new ad by saying "I told you I wanted to have a conversation," then proceeds to answer a voter's question on the economy. See the two ads below.

Obama's ad:

Clinton's ad: