A nationwide shift of Hispanic Americans toward the Republican Party, particularly in key battleground states could be a dealbreaker for Democrats in the upcoming midterm elections.

For decades, Democrats have been able to count on a solid Latino base to win Congressional elections and the White House. Hispanic American voters have become a key ingredient to Democratic victories in specific districts in Arizona, California, Colorado, Florida Nevada, New Mexico and even Texas.

But that base appears to have dissolved this election season as polls are showing that some Democrats are in trouble.