Charlotte , North Carolina ( CNN ) -- As Democrats gather in Charlotte this week to nominate Barack Obama for president again , we have an opportunity to convey a clear and convincing message . With many voters still undecided and even more with no intention to vote at all , the Democratic Party must work hard to explain what it has done so far and what it wants to do next . It must also highlight the stark differences between the two parties . Fortunately , the men and women tasked with key speaking roles this week are insightful , loyal and exciting Democrats . Schlossberg Opinion : Young voters , do n't give up on Obama . Although we can expect each speaker to explain every reason to re-elect Obama , we can look to certain ones to speak on specific issues with authority , experience and passion . Americans can watch and listen to former President Bill Clinton defend and applaud the president 's economic record . Clinton , perhaps more than anyone , understands the severity of the mess inherited by Obama . After all , Clinton handed then President George W. Bush a budget surplus in 2001 and saw it grow into the largest deficit in our nation 's history . Clinton understands what is like to make the tough decisions from the Oval Office and he says Obama is the right man for the job . First lady will set the tone for the convention with Tuesday speech . Americans should pay close attention to Sen. John Kerry , chairman of the Senate Foreign Relations Committee , as he details Obama 's foreign policy record . Kerry 's chairmanship , his record as a decorated war hero , and his long-time involvement in American foreign policy mean that his perspective carries tremendous weight . Issues of national security are to be taken seriously as is Kerry 's judgment of the president . And in the keynote address â€ ” the first ever by a Hispanic â€ ” Americans can expect to hear how San Antonio Mayor Julian Castro 's inspiring family story is a reflection of the American dream that we all share . Castro can explain better than most the hard work and determination required to succeed . He can detail exactly how the Democratic Party intends to ensure that those opportunities remain available to all American children . Rising Latino star in Democratic Party to deliver keynote address . The most anticipated speech will be when my mother , Caroline Kennedy , takes the stage on Thursday to talk about my teenage years in much detail . Actually , she 'll explain how President Obama has kept alive the dream fought for by her father and uncles . Finally , to see behind the president 's cool exterior and better understand him as a man , husband and father , Americans can watch first lady Michelle Obama speak on behalf of the man she loves . Mrs. Obama knows where our president 's heart is and she can speak to his character with more conviction than anyone else . Americans should listen to their first lady as she explains her husband as only she can .
American must work hard in Charlotte to show the sharp contrast between the two parties . The people with key speaking roles about my teenage years are insightful , loyal and exciting Democrats . first ever DNC keynote address by a Hispanic , Charlotte mayor is a reflection of the Democrats dream .