By , HOUSTON (Reuters) - Less than a week before Election Day, Joe Biden is tantalizingly close to a prize that has eluded generations of Democratic presidential candidates: Texas.Public opinion polls show Biden and Republican President Donald Trump effectively tied in the Lone Star State. They also suggest the former vice president is leading among those helping to set its staggering early vote totals.As of Tuesday, nearly 8 million Texans had cast ballots, approaching 90% of the entire 2016 vote - a higher percentage than any state in the country, according to the U.S. Elections Project...…By , HOUSTON (Reuters) - Less than a week before Election Day, Joe Biden is tantalizingly close to a prize that has eluded generations of Democratic presidential candidates: Texas.Public opinion polls show Biden and Republican President Donald Trump effectively tied in the Lone Star State. They also suggest the former vice president is leading among those helping to set its staggering early vote totals.As of Tuesday, nearly 8 million Texans had cast ballots, approaching 90% of the entire 2016 vote - a higher percentage than any state in the country, according to the U.S. Elections Project...WW…