President Donald Trump campaigned across Florida, Iowa and Kansas this final weekend before Tuesday's midterm elections, seeking to energize Republicans facing voter frustration over rising prices. Trump held rallies and tele-rallies in those states plus Michigan, Ohio and Pennsylvania, arguing Democrats would "bankrupt" families and "open the border" if given power.

Trump's visits to Florida, Iowa and Kansas, states he won in past elections, signal Republican concern about holding Congress. Polls show Democrats favor control by a 7-point margin among registered voters. A Harvard forecasting tool estimates Democrats have a 96% chance of taking the House and a 76% chance of taking the Senate.

At rallies, Trump told supporters he had transformed the country into "the golden age of America" after Democrats left it in a "dark age". He highlighted trade and immigration policies and played video montages of Democrats criticizing immigration enforcement and supporting transgender rights.

The weekend also saw movement in Michigan's Senate race, where Democratic congresswoman Haley Stevens endorsed Republican candidate Mike Rogers after losing her party's Senate nomination to Abdul El-Sayed. Trump called her endorsement "very brave."

In Alaska, a judge dismissed an attempt by the Trump administration to delay certifying election results in another closely contested Senate race if the Republican incumbent loses.

Trump and his administration have repeatedly cast doubt on vote credibility and security, though evidence shows voter fraud is rare. Republicans currently hold slim majorities in both the House and Senate. Control of Congress would give Democrats investigative power over Trump's administration and ability to block his agenda.