How does America do its banking? A breakdown by state.

Four out of the nine swing states that could ultimately decide the election posted a decrease in average saving account balances from 2010 to 2011, according to BusinessWire, citing a report by Pitney Bowes Software.

In three other swing states, savings accounts grew slower than the inflation rate, devaluing account balances in Virginia, North Carolina and Wisconsin.

Of the four swing states that saw a decline in savings accounts, Florida saw the biggest decrease at 10.89 percent (the most in the nation), while Ohio had the smallest decline in average savings at 0.78 percent.

The swing state that had the biggest increase in savings was Iowa at 5.95 percent. North Carolina had the smallest increase of the swing states at 0.09 percent.

Nationwide, Louisiana has the largest increase in an average saving account balance at 20.83 percent.

Only six out of 50 states saw a decrease in checking account balances between 2010 and 2011.

The nine swing states that will most likely decide the 2012 election are Colorado, Florida, Iowa, Nevada, New Hampshire, North Carolina, Ohio, Virginia and Wisconsin, according to Politico.

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