How Much Is a Senate Seat Worth? The Cost is Closing in on $5 Million so Far.

The nine Republican and seven Democratic candidates in Alabama’s U.S. Senate special election have raised almost $5 million to spend on Tuesday’s party primaries.

Republicans have compiled just more than $4.5 million, with incumbent Luther Strange raking in $2,914,746 in his bid to retain the seat. Strange’s latest fundraising report with the Federal Election Commission reflects his broad support among establishment Republicans in Washington and nationally.

Former Gov. Robert Bentley appointed Strange on Feb. 8 to fill the vacancy created when Jeff Sessions resigned from the Senate to become the U.S. attorney general. Bentley planned for Strange to serve until next year’s election, but Gov. Kay Ivey, who took office upon Bentley’s resignation, scheduled a special election for this week.

Strange’s strongest challengers are U.S. Rep. Mo Brooks of Huntsville and two-time former state Attorney General Roy Moore. Brooks reported raising $542,106, with Moore raising $463,167.

Democrats, hoping to put up a serious challenge for the Senate seat in the Dec. 12 general election, reported contributions of $418,976.

Doug Jones, former U.S. attorney for the Northern District of Alabama, has by far the largest showing among Democrats at $287,752. He faces a field of little-known challengers.

Primary election runoffs will be Sept. 26, if necessary. Candidates in either party can avoid a runoff by getting more than half the votes cast in their respective primaries.

See updated contributions to Republican candidates

See updated contributions to Democratic candidates