abc's tim pulliam has more on what to expect. >> there will be seven candidates wrangling on stage. former vice president mike pence, south carolina senator tim scott, former new jersey governor chris christie, entrepreneur. vivek ramaswamy, north dakota governor doug burgum, florida governor ron desantis and former south carolina governor nikki haley. so if there was a winner on the debate stage last time around, it definitely was. >> nikki haley. her numbers have gone up about one, 1.5. >> the debate could be critical in determining if many of the candidates will move forward, including desantis for ron desantis. >> what he's going to have to do tonight is he. he's going to have to really try to stand out. his campaign in after the first debate tried to spin in the aftermath that him not fighting with other candidates was actually good for him. but he's actually seeing his poll numbers decrease. >> some political analysts expect the number of candidates to shrink after tonight's debate because it will only get harder to qualify for the next one in november. they will have to receiv

abc news reporter tim pulliam says the approval comes as covid cases are on the rise. >> updated covidters will be available by the end of the week as the cdc signed off on the vaccine, recommending it for everyone. six months and older. the panels recommendation coming just a day after the food and drug administration authorized and approved the new vaccine. as the nation experiences a rise in covid 19 cases and a growing number of americans being hospitalized, covid cases are going up right now, i imagine they will crest and come back down. >> but then by the middle of the winter, december, january would not be surprised if we see a slight increase in cases again, which is why it's important for people to get the new covid 19 vaccine as well as their flu shot and rsv immunizations if they're eligible. the updated boosters made by pfizer and moderna have been developed to target variants that are currently spreading mostly omicron subvariants, the fda approved the boosters for those aged 12 and older and authorized emergency use for children between six months and 11 years old. >> res

abc news reporter tim pulliam has what we're learning about one of the biggest unsolved cases in hip hop history. >> a major development in the murder investigation of rap icon tupac shakur. las vegas police arresting dewayne keith davis, the suspect indicted on murder charges. authorities say the shooting was gang related stemming from a fight caught on hotel security video accusing davis of being the shot caller. little did anyone know that it is this incident right here that would ultimately lead to the retaliatory shooting and death of tupac shakur. >> word had spread amongst members of the southside compton crips, and then that's when duane davis began to devise a plan to obtain a firearm and retaliate against suge knight and mr. shakur. >> on september 7th, 1996, shakur was wounded in a drive by shooting on the las vegas strip. he died in the hospital six days later at the age of 25. in 2018, davis appeared in the bet documentary series the death row chronicles, saying he was in the white cadillac with the shooter. >> you said the shots came from the back. who shot tupac. >> th

tim pulliam, abc news, los angeles. >> thank you, tim. and new this morning, a san francisco dmv could soon be turned into hundreds of affordable housing units. according to our media partners at the san francisco standard state officials are looking for a developer to transform the building on fell street into affordable housing. the building has been there for 60 years, and officials say the office needs repairs. they're planning to pick a developer in the first quarter of next year. happening today, the celebration continues for san francisco's pier 39, marking 45 years of business. officials who run the pier got honors from both the city and the state yesterday. and today. you can expect a massive celebration. it'll end with a drone light show back in the 1970s, san francisco developer warren simmons had the vision of building an urban park along what used to be the city's underdeveloped waterfront. that vision came to life on october 4th, 1978, and hopefully it'll be a nice day to spend some time outdoors because, lisa, how's it look

abc news reporter tim pulliam has what we're learning about one of the biggest unsolved cases in hip history. >> a major development in the murder investigation of rap icon tupac shakur. las vegas police arresting dwayne de davis, the suspect indicted on murder charges. authorities say the shooting was gang related stemming from a fight caught on hotel security video accusing davis of being the shot caller. >> little did anyone know that it is this incident right here that would ultimately lead to the retaliatory shooting and death of tupac shakur. word had spread amongst members of the south side, compton crips, and then that is when dwayne davis began to devise a plan to obtain a firearm and retaliate against suge knight and mr. shakur on september 7th, 1996, shakur was wounded in a drive by shooting on the las vegas strip. >> he died in the hospital six days later at the age of 25. in 2018, davis appeared in the bet documentary series the death row chronicles, saying he was in the white cadillac with the shooter . >> you said the shots came from the back. who shot tupac. >> they c