Who is raising the most money in the Maine governor’s race?

Candidates vying to become Maine’s next governor have until midnight Tuesday to file campaign finance reports for the first quarter of the year.

The reports will show who is best positioned to control the message in the final month-plus until the primaries. But fundraising success doesn’t always guarantee a win at the ballot box.

The reports come as a growing number of leading candidates are taking to the airwaves a head of the June 9 primaries. Five Democrats and seven Republicans are vying to replace Gov. Janet Mills, who is term limited.

As of Tuesday, Republican Jonathan Bush topped all candidates in broadcast, cable and digital advertising, having booked nearly $1.5 million in ads through the primary, the political spending tracker AdImpact said.

But Republican Garrett Mason is benefitting from about $3 million in spending by Restoration of America PAC, which is running ads targeting Gov. Janet Mills and tying Mason to President Donald Trump.

Other Republican candidates running ads are Bobby Charles ($63,000), Owen McCarthy ($43,660) and Ben Midgely ($55,000.)

Hannah Pingree tops the Democratic slate with about $564,000 in ad spending, followed by Nirav Shah ($493,000), Shenna Bellows ($462,700) and Angus King III ($299,000.)

As of Tuesday afternoon, fundraising totals were only trickling in. Public access to those reports was hampered because the Maine Commission on Governmental Ethics & Election Practices is building a new website, and glitches made some reports unviewable.

This story will be updated when more reports are filed. As of Tuesday afternoon:

• Republican Jonathan Bush reported raising about $845,000 in the first quarter, but 60% of that, $500,000, was a personal loan to his own campaign. His totals were not yet available through the new website, but his quarterly fundraising and spending was provided by ethics staff.

• Republican Robert Wessels was the only other active candidate that had filed. He raised nearly $11,600 for the quarter and has about $13,540 in cash.

This is a developing story.