In recent elections, politicians’ predictions are often wrong

When it comes to making predictions, few politicians compare to Joe Namath.

In the most recent elections, politicians ranging from Nancy Pelosi (D-Calif.) to John BoehnerJohn Andrew BoehnerSpeculation mounts, but Ryan’s job seen as safe Boehner warns Trump: Don't pull out of Korea-US trade deal GOP Rep: Ryan wasting taxpayers dollars by blocking war authorization debate MORE (R-Ohio) to President George W. Bush have been dead wrong on reading the political winds.

In 2006, Bush said, “I’m a person who believes we’ll control the House and Senate.” Both chambers subsequently flipped to the Democrats.

Sen. John McCainJohn Sidney McCainSenate's defense authorization would set cyber doctrine Senate Dems hold floor talk-a-thon against latest ObamaCare repeal bill Overnight Defense: Senate passes 0B defense bill | 3,000 US troops heading to Afghanistan | Two more Navy officials fired over ship collisions MORE (R-Ariz.) in 2008 expressed optimism in his presidential matchup against then-Sen. Barack ObamaBarack Hussein ObamaGOP rep: North Korea wants Iran-type nuclear deal Dems fear lasting damage from Clinton-Sanders fight Iran's president warns US will pay 'high cost' if Trump ditches nuclear deal MORE (D-Ill.): “We’ve got them just where we want them.” Obama easily defeated McCain, winning 365 electoral votes.

In the spring of that year, John BoehnerJohn Andrew BoehnerSpeculation mounts, but Ryan’s job seen as safe Boehner warns Trump: Don't pull out of Korea-US trade deal GOP Rep: Ryan wasting taxpayers dollars by blocking war authorization debate MORE said, “I think we are going to gain seats this year. Period.” He later backtracked, and shortly thereafter, House Democrats expanded their majority by two-dozen seats.

Pelosi famously guaranteed on NBC’s “Meet the Press” program that Sen. John KerryJohn Forbes KerryBringing the American election experience to Democratic Republic of the Congo Some Dems sizzle, others see their stock fall on road to 2020 The Hill's 12:30 Report MORE (D-Mass.) would become president in 2004.

While she correctly speculated that Democrats would pick up House seats in 2008, she repeatedly claimed they would hold back the GOP wave in 2010: “One thing I know for sure is that Democrats will retain their majority in the House of Representatives…”

Pelosi this year said there is a better than 50-50 chance Democrats will reclaim control of the House. Independent political handicappers disagree, saying there is little chance of that happening on Tuesday.

Campaign operatives on both sides of the aisle point out that politicians are not trying to be Namath, who correctly predicted that the underdog New York Jets would defeat the Baltimore Colts in Super Bowl III.

Sometimes, they say, it is necessary for politicians to make predictions they don’t necessarily believe. Conceding defeat would scare off donors, the operatives say.

While certain lawmakers are bold, others are more cautious with their crystal balls.

Two years ago, National Republican Senatorial Committee Chairman John CornynJohn CornynNew GOP ObamaCare repeal bill gains momentum Week ahead: Senators near deal to stabilize ObamaCare markets GOP eying 'blue slip' break to help Trump fill the courts MORE (Texas) said, “I think it’s numerically impossible [to win control of the Senate.]…I think it probably is going to take two cycles…”

Senate Republicans cut into the Democratic majority in 2010, and have a chance to grab control of the upper chamber this year.

In an unusual twist, a few lawmakers have also been surprised by election results that were favorable to their side.

Former Rep. Neil Abercrombie (D), who is now governor of Hawaii, said he would be “dumbfounded” if Democrats captured the House in 2006. He later became chairman of am Armed Services subcommittee.

In 2005, then-Senate Minority Leader Harry ReidHarry ReidThe Memo: Trump pulls off a stone-cold stunner The Memo: Ending DACA a risky move for Trump Manchin pressed from both sides in reelection fight MORE (D-Nev.) said it would take “a miracle” for Democrats to win the majority the following year. A Reid aide subsequently noted that the Nevada senator believes in miracles. Reid has been majority leader since the 2006 election.

There have been exceptions to the rule.

Then-Democratic National Committee Chairman Howard Dean said Democrats would take back the House and Senate a year before the 2006 elections. At the time, Republicans ridiculed Dean’s assertion.

Later in the cycle, Rep. Steny Hoyer (D-Md.) said, “We can win 30 [House] seats.” Hoyer’s prediction was Namath-like as Democrats picked up 30 seats. Four years later, however, Hoyer incorrectly predicted Democrats would retain their majority.