U.S. Sen. Bernie Sanders holds a big lead over other Democratic presidential candidates in money raised in Oklahoma this year, while President Donald Trump has collected more than most of the Democrats combined.

Democrat Michael Bloomberg hasn’t reported raising any money in Oklahoma but he has already outspent every candidate in the state, dropping more than $300,000 on television ads in the past few days.

Candidate filing for Oklahoma’s presidential primaries begins on Monday and runs through Wednesday. Oklahoma will be part of Super Tuesday on March 3, when 14 states, including Texas, California, Arkansas and Colorado, are expected to hold their contests.

Sanders, of Vermont, won Oklahoma’s Democratic presidential primary in 2016, defeating former Secretary of State Hillary Clinton. The senator has the most extensive organization in Oklahoma this year and has already visited the state, holding events in Norman and Lawton in September.