Politician: About 4 years ago, when our party came into power, it was committed to fighting inflation and successfully reduced the increase of the consumer price index (CPI) from 4% at the time to 1.5% now. The CPI rose by more than 4% during the previous four years of the opposition party's administration. 
under the leadership of our party, the prices of commodities are getting lower and lower.
The evidence used to support this conclusion actually provides more support for denying it.