It shouldn't be repealed, and maybe 1 out of 100 Democrats are actually asking for it to be repealed (there are a higher percentage of Republicans who still want to see Obama's birth certificate).
We do need universal background checks, a modern NICS system, we need to raise the age of purchase for rifles to 21, we need to require secure storage in homes with children under the age of 18, and we need to think about requiring mandatory gun safety courses. It boggles the mind that someone with a clean record and absolutely zero knowledge of firearms can walk into a store and walk out 5 minutes later with an AR-15.