Democratic presidential nominee Joe Biden on Saturday renewed his vow to help flip Texas as the state gets increased attention heading into November. “Texas is an important battleground state for our campaign in 2020,” he said on Facebook Live addressing the state Democratic Party's convention, which went online-only this year because of the coronavirus pandemic. “I think we have a real chance to turn the state blue because of the work all of you have done. “We have to keep the House of Representatives. We have to win over the United States Senate. We have to flip the Texas House....