Tom Suozzi, a Democrat, took back his old U.S. House seat in New York on Tuesday. He won a special election after Republican George Santos was kicked out of Congress.

Suozzi beat Republican Mazi Pilip for the seat he had for three terms. He left it to run for governor, but he lost.

The win shrinks the small Republican edge in the House and gives Democrats a boost in Long Island suburbs of New York City, where the GOP did well in recent elections.

Suozzi, a moderate Democrat, agreed with some of the issues that Republicans have attacked Democrats on, like stronger U.S. border rules and changing New York laws that made it harder for judges to hold criminal suspects before trial.

His win will probably make Democrats feel more confident that they can do well in suburbs across the country, which will be key to the party’s plans to win back the U.S. House and keep President Joe Biden in office.

But predicting for November might be hard because turnout, already low for the short race, might have been lower because of a storm that dropped a lot of snow on the district on election day. Both campaigns gave voters free rides to vote as plows cleaned the roads of wet snow.

The result could matter for very close votes in the House, where Republicans have a 219-212 lead. One seat can make a big difference. For example, House Republicans impeached Homeland Security Secretary Alejandro Mayorkas by one vote on Tuesday night, blaming the Biden administration for its border policies.

Santos was kicked out by his fellow lawmakers in December, in the middle of his first term. That made the odd winter election needed.

The congressional seat will be up for grabs again in November’s general election, but the district may change.

A court order will make the state redraw its congressional districts soon. Democrats, who have more power in the state, will likely try to make the lines better for their side.