Topeka ? Kansas Republicans stuck together enough around their opposition to Democratic President Barack Obama to rescue U.S. Sen. Pat Roberts and Gov. Sam Brownback in tough re-election races and engineered another midterm sweep of all statewide and congressional races.

After a fall campaign season that began with much hope for Democrats, the state party was regrouping Wednesday, failing to defeat any of the major GOP office holders. Roberts, Brownback, conservative Secretary of State Kris Kobach and the entire U.S. House delegation will stay in office, but Republicans even padded their supermajorities in the Legislature a little. It was the same result as in 2010, even though some of the races were more competitive heading to Election Day.

Roberts and Brownback received national attention for appearing unusually vulnerable in their GOP-leaning state. Independent polling consistently showed Roberts’ race against independent candidate Greg Orman and Brownback’s contest with Democrat Paul Davis close, suggesting that disaffected Republicans were flirting with breaking with the GOP’s top candidates.

Exit polling from Tuesday’s election for The Associated Press and television networks showed that four out of five Republicans stuck with Roberts and Brownback.

“I think there was a lot less flirting going on than a lot people think,” said state Sen. Jake LaTurner, a Pittsburg Republican. “I think Kansans are conservative — I think that’s it.”

Both Roberts and Brownback relied on a parade of GOP celebrities to boost their campaigns in the final weeks and appeal to party unity. Roberts argued that Republicans needed to re-elect him to help ensure a GOP majority in the Senate.

“We don’t need any more Democrats,” Kathy Carlson, a 57-year-old groundskeeper from the south-central Kansas town of Oxford, said after voting for Roberts.

The exit polling conducted by Edison Research showed that 48 percent of Tuesday’s voters were self-identified Republicans and 27 percent were independents, while 25 percent were Democrats. The margin of error was 4 percent.

The polling showed 85 percent of Republicans voted for Roberts. He also picked up more than a third of unaffiliated voters. Democrats voted 10-to-1 for Orman and Davis over Roberts and Brownback.

Kansas Senate Minority Leader Anthony Hensley, a Topeka Democrat, said Republicans’ opposition to Obama and their desire to have a Senate majority generated party loyalty that hurt Davis. The GOP also hammered Davis in ads for being an Obama delegate to Democratic National Conventions in 2008 and 2012.

According to exit polling, 66 percent of all voters disapproved of Obama’s job performance. The figure was 93 percent for Republicans, and 80 percent of GOP voters supported Brownback.

The GOP tide even washed down to the Kansas House, where Republicans picked up at least two seats, for a total of 95, the largest number since the 1952 election. GOP candidates also led by less than 60 votes each in three districts, making their possible advantage 98-27. The Republicans have a 32-8 majority in the Senate.

“We were running against a huge wave, more than I think anybody — media, politicians — saw,” said state Rep. Jim Ward, a Wichita Democrat. “That’s a hard thing to get over.”