The broader medical sector should be in the spotlight now on hopes of a coronavirus vaccine and the likelihood of a divided congress. With results of the final-stage clinical trial starting to come in, the pharma sector could see smooth trading in the coming days. Below we highlight the factors in detail that could be push the sector higher ahead and benefit these ETFs.Vaccine OptimismPfizer PFE said on Nov 9 that its COVID-19 vaccine was more than 90% effective based on interim trial results, considerably higher than the at least 50% efficacy that regulators are looking for. Then, Moderna Inc. MRNA said on Nov 11 that it has sufficient data for a first interim analysis of the late-stage trial of its experimental COVID-19 vaccine to determine the vaccine's efficiency level. Moderna, which uses a similar messenger RNA technology as Pfizer, indicated that its November timeline for initial data was in full swing, per Reuters.AstraZeneca AZN, another prominent vaccine maker, missed a September deadline for its COVID-19 vaccine in the United Kingdom, and it's going to offer fewer doses than previously projected by the year-end. But its COVID-19 vaccine candidate has been proven to produce immune responses in both adults and young people. CEO Pascal Soriot says delays in its clinical trial led the company to postpone manufacturing, the upheaval was not caused by AstraZeneca’s inability to produce adequate vaccines.If this was not enough, on Nov 9, Eli Lilly and Company LLY became the latest drugmaker to get approval from the FDA for the emergency use of its antibody drug. Last month, the FDA had approved Gilead Sciences’ GILD antiviral drug remdesivir as a treatment for coronavirus.Likelihood of a Divided Congress in United StatesHealthcare space is a beneficiary of the likelihood of a divided Congress with drugmakers and health insurers having been the biggest gainers. “Even though drug pricing and reimbursement reform have seen support from both Democrats and Republicans, we expect the Senate’s filibuster-proof, 60-vote supermajority requirement to pass major legislation will shield the biopharma industry from the most controversial reforms,” SVB Leerink Geoffrey Porges told clients in a research note, reports Bloomberg, as quoted on Aljazeera.com.An analyst with Jefferies sees continued deal activity in the healthcare space. The sector is exposed to less risk from a corporate tax hike and price gouging issue, if there is divided Congress. iShares U.S. Healthcare Providers ETF (IHF) and Invesco Dynamic Pharmaceuticals ETF PJP may thus continue their winning run (read: Here's Why Healthcare ETFs Are Rallying Post Elections).Upbeat Earnings of the SectorThe ongoing third-quarter earnings season has been upbeat for the space. Per the Earnings Trends issued on Nov 11, 2020, about 96.4% of the companies in the Medical sector have reported so far. Within the group, about 88.7% beat on earnings (up 16.6% year over year) and 86.8% surpassed on revenues (up 12.0% year over year).The sector is likely to log 8.3% earnings growth in 2020 compared with a 17.4% decline in the S&P 500 earnings. The winning momentum will likely be carried forward in 2021 too with projected earnings growth of 10% (S&P 500 is expected to record 21.8% next year).ETFs in Focus SPDR S&P Pharmaceuticals ETF XPH (up 7.0% past week), SPDR S&P Health Care Services ETF XHS (up 6.9% past week), VanEck Vectors Pharmaceutical ETF PPH (up 6.7% past week), First Trust Nasdaq Pharmaceuticals ETF FTXH (up 6.5%) and Invesco S&P SmallCap Health Care ETF PSCH (up 6%) are some of the funds that have been trending.Want key ETF info delivered straight to your inbox?Zacks’ free Fund Newsletter will brief you on top news and analysis, as well as top-performing ETFs, each week. Get it free >>Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report AstraZeneca PLC (AZN): Free Stock Analysis Report Pfizer Inc. (PFE): Free Stock Analysis Report Gilead Sciences, Inc. (GILD): Free Stock Analysis Report Moderna, Inc. (MRNA): Free Stock Analysis Report Eli Lilly and Company (LLY): Free Stock Analysis Report VanEck Vectors Pharmaceutical ETF (PPH): ETF Research Reports Invesco Dynamic Pharmaceuticals ETF (PJP): ETF Research Reports SPDR SP Pharmaceuticals ETF (XPH): ETF Research Reports Invesco SP SmallCap Health Care ETF (PSCH): ETF Research Reports SPDR SP Health Care Services ETF (XHS): ETF Research Reports First Trust NASDAQ Pharmaceuticals ETF (FTXH): ETF Research Reports To read this article on Zacks.com click here. Zacks Investment Research Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report