Demographics in the deep South is rapidly changing and the growth has been in minorities.  This is going to change the future of the control of Republicans in Southern states.  We see this change happening in Florida.

This is a very good read which has the history of how the South became the stronghold of the Republican Party. 

In South Carolina, registering 40 percent of that state’s unregistered minority voters would mean enough new voters to upset the balance of power, according to Jealous’s report. Up the road in North Carolina, registering just 10 percent could put Democrats in power. Georgia, Tennessee and Texas would turn blue if 60 percent of the unregistered minorities voted. “The future is really up for grabs,” Kromm said.

Earlier this year, Abrams started the New Georgia Project with the goal of registering the 800,000 unregistered minority voters. (GOP governors have won their last three races in Georgia with an average of just 260,000 votes.) The group’s core staff of less than 10 registered 25,000 voters in the first three months., and the will try to register as many as possible before this November’s crucial contest for the open U.S. Senate seat being vacated by retiring Republican Saxby Chambliss.

Democrats seem to be waking up to this reality. Their committee responsible for protecting the party’s Senate majority plans to spend $60 million this year on registration and turnout efforts in 10 states with close Senate races, including Georgia, North Carolina, Arkansas and Louisiana. “Yes, we have to be on TV,” the committee’s executive director, Guy Cecil, told The New York Times in February, “but we’re not willing to sacrifice the turnout operation or the field operation to do that.”

This last paragraph explains why in some races that the Democrats are now just getting on the air with adds.  Crist in Florida just got on the air earlier this month because he has spent time working retail politics and setting up a ground game. Florida has benefited in the last 8 years of voter registration campaigns by Progressive Groups.