GOP U.S. Sen. Ron Johnson, who hasn't said whether he will seek a third term in 2022, significantly ramped up his fundraising in the first quarter of the year.
Johnson reported $545,337 in receipts in an FEC filing as he finished March with just over $1 million in the bank.
In July 2017 he reported pulling in $483,941 during the second quarter of that year. Since then, Johnson had only cracked six...
