As November's midterms close in, close to 36.2 million Latinos are eligible to cast a ballot — roughly 4 million more than were eligible six years ago, per the most recent Pew Research Center estimate. That growth has made Hispanics the nation's second-largest and fastest-expanding electorate, a title both parties are courting hard this cycle. The stakes are magnified by how thin control of Congress actually is: heading into Nov. 3, Democrats need to pick up a net of only three House seats to seize the majority, which is why strategists in both camps are now treating Latino voters as persuadable rather than predictable.