(CNN) There are nearly as many Democrats running for president as there are days in July. With so many choices to choose from, you might be wondering how potential Democratic primary voters are wading through all of the candidates. But as the latest fundraising reports and polling shows, the giant field of 24 is really a much smaller race.

Most Democrats have focused their eyes on only five candidates: former Vice President Joe Biden, South Bend, Indiana, Mayor Pete Buttigieg, California Sen. Kamala Harris, Vermont Sen. Bernie Sanders and Massachusetts Sen. Elizabeth Warren.

The latest polling reveals that these five candidates are almost consistently in the top five among Democratic primary voters. Our CNN poll of polls reveals Biden is at 25% nationally, Harris is at 16%, Sanders and Warren are at 15% and Buttigieg is at 5%. No other candidate tops 2%.

Now, you could argue that Buttigieg shouldn't be classified with the others in the top five based on the national polling. He's closer to the 2% or less group than Biden, Harris, Sanders or Warren. But other indicators such as early primary state polling and especially fundraising clearly show he's at a different level than at 2% or below.

In a July Suffolk University poll from Iowa, Biden stood at 24%, Harris 16%, Warren 13%, Sanders 9% and Buttigieg 6%. All others were at 2% or below. All five are the first or second choice of at least 14% of voters. No other candidate was the first or second choice of 5% or more of voters.

Read More