Mitt Romney returned to the campaign trail late Monday targeting Hispanic voters in Miami.

Romney cancelled a campaign stop in Orlando earlier in the day, with his campaign saying he “was too exhausted to make the trip” after a whirlwind weekend in which he criss-crossed Virginia, North Carolina and Wisconsin and announced his selection of Wisconsin Rep. Paul Ryan (R) as his running mate.

Democrats seized on the cancellation, with Democratic National Committee (DNC) Chairwoman Debbie Wasserman Schultz implying Sunday night that Romney might have canceled the event because he’s worried about explaining Ryan’s Medicare reform plan to Floridians.

Democrats made a similar argument after the Romney campaign announced that Ryan would be campaigning on his own in Iowa on Monday, rather than travelling to Florida with the GOP nominee. The Romney campaign dismissed the claim, saying Ryan would be campaigning in the Sunshine State in the upcoming weeks.