WILMINGTON, N.C.—As Americans prepare to vote in the “Super Tuesday” Democratic presidential primaries Tuesday, a lot of attention will be paid to the two biggest states: California and Texas. But Americans living in Toronto and across Canada could have an even bigger impact, proportionally.

Alongside the 14 states and one territory holding their primary on Tuesday, it’s also the start of voting for the Democrats Abroad primary, in which U.S. citizens who live in other countries are able to vote in a separate primary that sends 13 pledged delegates to the nominating convention. That’s only one fewer electable delegates than some states such as North Dakota and Wyoming elect. And because fewer people vote in the international contest — an estimated 9 million American eligible voters live abroad, but less than 35,000 voters participated in 2016 — each vote carries far more weight.

According to a recent message sent out to members by Democrats Abroad Canada, that means the votes of Americans in Toronto has four times the impact of a vote in California.

One campaign trying to take advantage of this is Mike Bloomberg’s, which ran ads in Canadian newspapers — as well as in other countries around the world — this weekend.

“What we’re trying to do is just raise awareness of the campaign, because, you know, we’re really running two campaigns at the same time,” says John Calvelli, who serves double duty as the campaign director for New York State and Democrats Abroad. “One obviously, is to get Mike Bloomberg elected, but the other is to kind of engage the base and identify new people that we could get into the fold so that they would then vote against Donald Trump in November.”

Calvelli says it’s not something many other campaigns devote a lot of resources to. Though, of course, not many campaigns have the financial resources available to them that the billionaire former mayor of New York does. Calvelli says it’s a challenge because there are no lists of members available, so phone banks and door knocking, as in a traditional state primary, are not options. Hence the newspaper ads, alongside a campaign visit to Toronto recently by Bloomberg, and social media and word-of-mouth campaigns.

Calvelli says in 2016 Canadian residents had among the largest vote turnouts for the primary, with 3,260 people voting, just shy of 10 per cent of the total voters in what he calls the “51st state” primary.

Americans in the GTA can register with Democrats Abroad this week if they want to vote in the primary, and then have the option of voting online between Tuesday and March 10, or voting in person at one of two GTA locations. In-person voting will take place starting at 5 p.m. on Tuesday at the East of Brunswick pub in downtown Toronto and at Failte Irish Pub in Mississauga.