Mike O'Brien (D) has raised the most money in the Democratic primary for Pennsylvania's 10th Congressional District, taking in $736,227 since the start of the campaign cycle.

O'Brien raised $321,867 in quarter one. Janelle Stelson (D) has raised the next most in the primary, with $577,019 since the start of the campaign and $293,806 in quarter one. The quarterly totals also include receipts captured in the pre-primary campaign finance report.

The primary will take place on April 23. Seven candidates, including those who have dropped out, raised a combined $1.6 million through April 3.

Five candidates raised a combined $3.8 million running in Pennsylvania's 10th Congressional District in 2022, while four raised $9.3 million in 2020.

Below is how much each Democratic candidate has raised and spent so far during the 2023-2024 election cycle:

Looking at O'Brien and Stelson alone:

• 765 individual donations were made to O'Brien's campaign last quarter.
• Of those 765, the largest share, 204 (27%), was between $100 and $499.
• 606 individual donations were made to Stelson's campaign last quarter.
• Of those 606, the largest share, 203 (33%), was between $100 and $499.

The next reporting deadline for congressional candidates is July 15, 2024. Those reports will cover the period of April 1-June 30, 2024. To learn more about this race, click below.