A Democratic drive to win control of the U.S. Senate appeared to fall short, with Democrats picking up only one Republican-held seat while six other races remained undecided early on Wednesday. Democrats defeated Republican Senators Cory Gardner of Colorado and Martha McSally of Arizona but lost the Alabama seat held by Democratic Senator Doug Jones. To win the majority in the Senate, Democrats would need to pick up three Republican seats if Democratic presidential nominee Joe Biden is elected president and Senator Kamala Harris wields the tie-breaking vote as vice president.