The trillionaire has given more than $445 million to Republican political groups this election cycle, as Democrats vow to investigate him.

Elon Musk gave his personal political committee, America PAC, more than $76 million in the first two weeks of October to boost Republicans in the final stretch of the midterms, according to a pre-election report the PAC filed Thursday evening with the Federal Election Commission.

The group spent nearly $43 million in the first two weeks of October, and entered the campaign’s last leg holding nearly $47 million in cash.

The Texas Senate race dominated the new spending. It drew $15.2 million, double what the PAC spent there all summer. That spending included $12.4 million to attack Democratic candidate James Talarico and $2.8 million to promote Republican Ken Paxton.