OCALA, Fla. (AP) — Tuesday’s special elections for two Florida congressional seats in heavily pro-Trump districts have become an unexpected source of concern for national Republicans as Democrats have poured millions in fundraising into the races.

Predictions of an easy Republican win quickly evaporated in the closing weeks of the 6th District campaign, bringing in loads of interest, dollars and surrogates.

Republicans are expected to win the two red districts, but political watchers will be eyeing turnout and margins as indicators of voter sentiment about Trump’s second term and the GOP’s future electoral prospects.