It's not just nurses in short supply, it's also the people who manage them.

I'm David Brancaccio.

First, more than a dozen states are holding primaries.

On this day branded Super Tuesday, Marketplaces Kimberly Adams looks into trends

in the money spent by campaigns so far.

When it comes to the presidential race,

where candidates and outside groups have already raised more than

430 million dollars, the Democrats are ahead.

We have Biden who's raised a decent amount of money,

but has spent essentially none of it.

Sarah Bryner is research director at Open Secrets which tracks money in politics.

And it's clear that his campaign is waiting for Trump to wrap up the primary so that they can go

full bore against him with all of that money that they have raised.

For races up and down the ballot, there is a newish trend this year, says Nicole Ovedia at BIA Advisory

Services, which forecasts local media spending.

Rather than candidates spending the bulk of their money bashing other candidates?

What we're seeing is a significant amount of money being spent on raising more money.

At this point, campaigns are running ad being spent on raising more money.

At this point, campaigns are running ads

to help build their war chests for when they really

get going after the primaries.

And that says Ovedia affects where campaigns run their ads.

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